// Numbas version: exam_results_page_options
{"name": "Investment practice", "metadata": {"description": "", "licence": "All rights reserved"}, "duration": 0, "percentPass": 0, "showQuestionGroupNames": false, "shuffleQuestionGroups": false, "showstudentname": true, "question_groups": [{"name": "Group", "pickingStrategy": "all-ordered", "pickQuestions": 1, "questionNames": ["", "", "", "", ""], "variable_overrides": [[], [], [], [], []], "questions": [{"name": "Compound Interest", "extensions": [], "custom_part_types": [], "resources": [], "navigation": {"allowregen": true, "showfrontpage": false, "preventleave": false, "typeendtoleave": false}, "contributors": [{"name": "Yvonne Wancke", "profile_url": "https://numbas.mathcentre.ac.uk/accounts/profile/3703/"}], "tags": [], "metadata": {"description": "", "licence": "All rights reserved"}, "statement": "<p>&pound;{prin} is invested for {years} years at a rate of {r}%. Calculate the total amount at the end of the period.</p>", "advice": "<p>Remember to use the formula for compound interest</p>", "rulesets": {}, "builtin_constants": {"e": true, "pi,\u03c0": true, "i": true}, "constants": [], "variables": {"finamount": {"name": "finamount", "group": "Ungrouped variables", "definition": "prin*(1+(r/100))^years", "description": "<p>Final amount</p>", "templateType": "anything", "can_override": false}, "r": {"name": "r", "group": "Ungrouped variables", "definition": "random(3,15)\n", "description": "<p>This is the rate of interest</p>", "templateType": "anything", "can_override": false}, "years": {"name": "years", "group": "Ungrouped variables", "definition": "random(3..10)", "description": "<p>This is the number of years</p>", "templateType": "anything", "can_override": false}, "prin": {"name": "prin", "group": "Ungrouped variables", "definition": "random(1000..3000)", "description": "<p>This is the amount invested</p>", "templateType": "anything", "can_override": false}}, "variablesTest": {"condition": "", "maxRuns": 100}, "ungrouped_variables": ["prin", "years", "r", "finamount"], "variable_groups": [], "functions": {}, "preamble": {"js": "", "css": ""}, "parts": [{"type": "numberentry", "useCustomName": false, "customName": "", "marks": "4", "scripts": {}, "customMarkingAlgorithm": "", "extendBaseMarkingAlgorithm": true, "unitTests": [], "showCorrectAnswer": true, "showFeedbackIcon": true, "variableReplacements": [], "variableReplacementStrategy": "originalfirst", "nextParts": [], "suggestGoingBack": false, "adaptiveMarkingPenalty": 0, "exploreObjective": null, "prompt": "<p>Give your answer correct to 2 decimal places.</p>", "minValue": "finamount", "maxValue": "finamount", "correctAnswerFraction": false, "allowFractions": false, "mustBeReduced": false, "mustBeReducedPC": 0, "precisionType": "dp", "precision": "2", "precisionPartialCredit": "50", "precisionMessage": "You have not given your answer to the correct precision.", "strictPrecision": true, "showPrecisionHint": true, "notationStyles": ["plain", "en", "si-en"], "correctAnswerStyle": "plain"}], "partsMode": "all", "maxMarks": 0, "objectives": [], "penalties": [], "objectiveVisibility": "always", "penaltyVisibility": "always"}, {"name": "Profit method", "extensions": [], "custom_part_types": [], "resources": [], "navigation": {"allowregen": true, "showfrontpage": false, "preventleave": false, "typeendtoleave": false}, "contributors": [{"name": "Yvonne Wancke", "profile_url": "https://numbas.mathcentre.ac.uk/accounts/profile/3703/"}], "tags": [], "metadata": {"description": "", "licence": "All rights reserved"}, "statement": "<p>Compare the investments for the following 3 projects (A, B and C) using the profit method.</p>\n<table width=\"510\" height=\"143\">\n<tbody>\n<tr>\n<td style=\"width: 111.25px;\">Year</td>\n<td style=\"width: 111.25px;\">Project A</td>\n<td style=\"width: 111.25px;\">Project B</td>\n<td style=\"width: 111.25px;\">Project C</td>\n</tr>\n<tr>\n<td style=\"width: 111.25px;\">0</td>\n<td style=\"width: 111.25px;\">-{A0}</td>\n<td style=\"width: 111.25px;\">-{B0}</td>\n<td style=\"width: 111.25px;\">-{C0}</td>\n</tr>\n<tr>\n<td style=\"width: 111.25px;\">1</td>\n<td style=\"width: 111.25px;\">{A1}</td>\n<td style=\"width: 111.25px;\">{B1}</td>\n<td style=\"width: 111.25px;\">{C1}</td>\n</tr>\n<tr>\n<td style=\"width: 111.25px;\">2</td>\n<td style=\"width: 111.25px;\">{A2}</td>\n<td style=\"width: 111.25px;\">{B2}</td>\n<td style=\"width: 111.25px;\">{C2}</td>\n</tr>\n<tr>\n<td style=\"width: 111.25px;\">3</td>\n<td style=\"width: 111.25px;\">{A3}</td>\n<td style=\"width: 111.25px;\">{B3}</td>\n<td style=\"width: 111.25px;\">{C3}</td>\n</tr>\n<tr>\n<td style=\"width: 111.25px;\">4</td>\n<td style=\"width: 111.25px;\">{A4}</td>\n<td style=\"width: 111.25px;\">{B4}</td>\n<td style=\"width: 111.25px;\">{C4}</td>\n</tr>\n</tbody>\n</table>\n<p></p>", "advice": "", "rulesets": {}, "builtin_constants": {"e": true, "pi,\u03c0": true, "i": true}, "constants": [], "variables": {"A1": {"name": "A1", "group": "Ungrouped variables", "definition": "random(500..1000)", "description": "", "templateType": "anything", "can_override": false}, "A2": {"name": "A2", "group": "Ungrouped variables", "definition": "random(500..1000)", "description": "", "templateType": "anything", "can_override": false}, "A3": {"name": "A3", "group": "Ungrouped variables", "definition": "random(500..1000)", "description": "", "templateType": "anything", "can_override": false}, "A4": {"name": "A4", "group": "Ungrouped variables", "definition": "random(500..1000)", "description": "", "templateType": "anything", "can_override": false}, "B1": {"name": "B1", "group": "Ungrouped variables", "definition": "random(1000..2000)", "description": "", "templateType": "anything", "can_override": false}, "B2": {"name": "B2", "group": "Ungrouped variables", "definition": "random(1000..2000)", "description": "", "templateType": "anything", "can_override": false}, "B3": {"name": "B3", "group": "Ungrouped variables", "definition": "random(1000..2000)", "description": "", "templateType": "anything", "can_override": false}, "B4": {"name": "B4", "group": "Ungrouped variables", "definition": "random(1000..2000)", "description": "", "templateType": "anything", "can_override": false}, "C1": {"name": "C1", "group": "Ungrouped variables", "definition": "random(1000..2000)", "description": "", "templateType": "anything", "can_override": false}, "C2": {"name": "C2", "group": "Ungrouped variables", "definition": "random(1000..2000)", "description": "", "templateType": "anything", "can_override": false}, "C3": {"name": "C3", "group": "Ungrouped variables", "definition": "random(1000..2000)", "description": "", "templateType": "anything", "can_override": false}, "C4": {"name": "C4", "group": "Ungrouped variables", "definition": "random(1000..2000)", "description": "", "templateType": "anything", "can_override": false}, "A1tot": {"name": "A1tot", "group": "Ungrouped variables", "definition": "A1", "description": "", "templateType": "anything", "can_override": false}, "A2tot": {"name": "A2tot", "group": "Ungrouped variables", "definition": "A1+A2", "description": "", "templateType": "anything", "can_override": false}, "A3tot": {"name": "A3tot", "group": "Ungrouped variables", "definition": "A1+A2+A3", "description": "", "templateType": "anything", "can_override": false}, "A4tot": {"name": "A4tot", "group": "Ungrouped variables", "definition": "A1+A2+A3+A4", "description": "", "templateType": "anything", "can_override": false}, "B1tot": {"name": "B1tot", "group": "Ungrouped variables", "definition": "B1", "description": "", "templateType": "anything", "can_override": false}, "B2tot": {"name": "B2tot", "group": "Ungrouped variables", "definition": "B1+B2", "description": "", "templateType": "anything", "can_override": false}, "B3tot": {"name": "B3tot", "group": "Ungrouped variables", "definition": "B1+B2+B3", "description": "", "templateType": "anything", "can_override": false}, "B4tot": {"name": "B4tot", "group": "Ungrouped variables", "definition": "B1+B2+B3+B4", "description": "", "templateType": "anything", "can_override": false}, "C1tot": {"name": "C1tot", "group": "Ungrouped variables", "definition": "C1", "description": "", "templateType": "anything", "can_override": false}, "C2tot": {"name": "C2tot", "group": "Ungrouped variables", "definition": "C1+C2", "description": "", "templateType": "anything", "can_override": false}, "C3tot": {"name": "C3tot", "group": "Ungrouped variables", "definition": "C1+C2+C3", "description": "", "templateType": "anything", "can_override": false}, "C4tot": {"name": "C4tot", "group": "Ungrouped variables", "definition": "C1+C2+C3+C4", "description": "", "templateType": "anything", "can_override": false}, "A0": {"name": "A0", "group": "Ungrouped variables", "definition": "random(2300..1900)", "description": "", "templateType": "anything", "can_override": false}, "B0": {"name": "B0", "group": "Ungrouped variables", "definition": "random(3300..2900)", "description": "", "templateType": "anything", "can_override": false}, "C0": {"name": "C0", "group": "Ungrouped variables", "definition": "random(6300..5900)", "description": "", "templateType": "anything", "can_override": false}, "Aavinc": {"name": "Aavinc", "group": "Ungrouped variables", "definition": "(A1+A2+A3+A4)/4", "description": "", "templateType": "anything", "can_override": false}, "Bavinc": {"name": "Bavinc", "group": "Ungrouped variables", "definition": "(A1+A2+A3+A4)/4", "description": "", "templateType": "anything", "can_override": false}, "Cavinc": {"name": "Cavinc", "group": "Ungrouped variables", "definition": "(C1+C2+C3+C4)/4", "description": "", "templateType": "anything", "can_override": false}, "Aprofit": {"name": "Aprofit", "group": "Ungrouped variables", "definition": "A1+A2+A3+A4-A0", "description": "", "templateType": "anything", "can_override": false}, "Bprofit": {"name": "Bprofit", "group": "Ungrouped variables", "definition": "B1+B2+B3+B4-B0", "description": "", "templateType": "anything", "can_override": false}, "Cprofit": {"name": "Cprofit", "group": "Ungrouped variables", "definition": "C1+C2+C3+C4-C0", "description": "", "templateType": "anything", "can_override": false}}, "variablesTest": {"condition": "", "maxRuns": 100}, "ungrouped_variables": ["A1", "A2", "A3", "A4", "B1", "B2", "B3", "B4", "C1", "C2", "C3", "C4", "A1tot", "A2tot", "A3tot", "A4tot", "B1tot", "B2tot", "B3tot", "B4tot", "C1tot", "C2tot", "C3tot", "C4tot", "A0", "B0", "C0", "Aavinc", "Bavinc", "Cavinc", "Aprofit", "Bprofit", "Cprofit"], "variable_groups": [], "functions": {}, "preamble": {"js": "", "css": ""}, "parts": [{"type": "numberentry", "useCustomName": false, "customName": "", "marks": 1, "scripts": {}, "customMarkingAlgorithm": "", "extendBaseMarkingAlgorithm": true, "unitTests": [], "showCorrectAnswer": false, "showFeedbackIcon": true, "variableReplacements": [], "variableReplacementStrategy": "originalfirst", "nextParts": [], "suggestGoingBack": false, "adaptiveMarkingPenalty": 0, "exploreObjective": null, "prompt": "<p>What is the profit for Project A?</p>", "minValue": "Aprofit", "maxValue": "Aprofit", "correctAnswerFraction": false, "allowFractions": false, "mustBeReduced": false, "mustBeReducedPC": 0, "precisionType": "dp", "precision": 0, "precisionPartialCredit": "50", "precisionMessage": "You have not given your answer to the correct precision.", "strictPrecision": false, "showPrecisionHint": true, "notationStyles": ["plain", "en", "si-en"], "correctAnswerStyle": "plain"}, {"type": "numberentry", "useCustomName": false, "customName": "", "marks": 1, "scripts": {}, "customMarkingAlgorithm": "", "extendBaseMarkingAlgorithm": true, "unitTests": [], "showCorrectAnswer": false, "showFeedbackIcon": true, "variableReplacements": [], "variableReplacementStrategy": "originalfirst", "nextParts": [], "suggestGoingBack": false, "adaptiveMarkingPenalty": 0, "exploreObjective": null, "prompt": "<p>What is the profit for Project B?</p>", "minValue": "Bprofit", "maxValue": "Bprofit", "correctAnswerFraction": false, "allowFractions": false, "mustBeReduced": false, "mustBeReducedPC": 0, "precisionType": "dp", "precision": 0, "precisionPartialCredit": "50", "precisionMessage": "You have not given your answer to the correct precision.", "strictPrecision": false, "showPrecisionHint": true, "notationStyles": ["plain", "en", "si-en"], "correctAnswerStyle": "plain"}, {"type": "numberentry", "useCustomName": false, "customName": "", "marks": 1, "scripts": {}, "customMarkingAlgorithm": "", "extendBaseMarkingAlgorithm": true, "unitTests": [], "showCorrectAnswer": false, "showFeedbackIcon": true, "variableReplacements": [], "variableReplacementStrategy": "originalfirst", "nextParts": [], "suggestGoingBack": false, "adaptiveMarkingPenalty": 0, "exploreObjective": null, "prompt": "<p>What is the profit for Project C?</p>", "minValue": "Cprofit", "maxValue": "Cprofit", "correctAnswerFraction": false, "allowFractions": false, "mustBeReduced": false, "mustBeReducedPC": 0, "precisionType": "dp", "precision": 0, "precisionPartialCredit": "50", "precisionMessage": "You have not given your answer to the correct precision.", "strictPrecision": false, "showPrecisionHint": true, "notationStyles": ["plain", "en", "si-en"], "correctAnswerStyle": "plain"}], "partsMode": "all", "maxMarks": 0, "objectives": [], "penalties": [], "objectiveVisibility": "always", "penaltyVisibility": "always"}, {"name": "Average income", "extensions": [], "custom_part_types": [], "resources": [], "navigation": {"allowregen": true, "showfrontpage": false, "preventleave": false, "typeendtoleave": false}, "contributors": [{"name": "Yvonne Wancke", "profile_url": "https://numbas.mathcentre.ac.uk/accounts/profile/3703/"}], "tags": [], "metadata": {"description": "", "licence": "All rights reserved"}, "statement": "<p>Compare the investments for the following 3 projects (A, B and C) using the average income method.</p>\n<table width=\"510\" height=\"143\">\n<tbody>\n<tr>\n<td style=\"width: 111.25px;\">Year</td>\n<td style=\"width: 111.25px;\">Project A</td>\n<td style=\"width: 111.25px;\">Project B</td>\n<td style=\"width: 111.25px;\">Project C</td>\n</tr>\n<tr>\n<td style=\"width: 111.25px;\">0</td>\n<td style=\"width: 111.25px;\">{A0}</td>\n<td style=\"width: 111.25px;\">{B0}</td>\n<td style=\"width: 111.25px;\">{C0}</td>\n</tr>\n<tr>\n<td style=\"width: 111.25px;\">1</td>\n<td style=\"width: 111.25px;\">{A1}</td>\n<td style=\"width: 111.25px;\">{B1}</td>\n<td style=\"width: 111.25px;\">{C1}</td>\n</tr>\n<tr>\n<td style=\"width: 111.25px;\">2</td>\n<td style=\"width: 111.25px;\">{A2}</td>\n<td style=\"width: 111.25px;\">{B2}</td>\n<td style=\"width: 111.25px;\">{C2}</td>\n</tr>\n<tr>\n<td style=\"width: 111.25px;\">3</td>\n<td style=\"width: 111.25px;\">{A3}</td>\n<td style=\"width: 111.25px;\">{B3}</td>\n<td style=\"width: 111.25px;\">{C3}</td>\n</tr>\n<tr>\n<td style=\"width: 111.25px;\">4</td>\n<td style=\"width: 111.25px;\">{A4}</td>\n<td style=\"width: 111.25px;\">{B4}</td>\n<td style=\"width: 111.25px;\">{C4}</td>\n</tr>\n</tbody>\n</table>\n<p></p>", "advice": "", "rulesets": {}, "builtin_constants": {"e": true, "pi,\u03c0": true, "i": true}, "constants": [], "variables": {"A1": {"name": "A1", "group": "Ungrouped variables", "definition": "random(500..1000)", "description": "", "templateType": "anything", "can_override": false}, "A2": {"name": "A2", "group": "Ungrouped variables", "definition": "random(500..1000)", "description": "", "templateType": "anything", "can_override": false}, "A3": {"name": "A3", "group": "Ungrouped variables", "definition": "random(500..1000)", "description": "", "templateType": "anything", "can_override": false}, "A4": {"name": "A4", "group": "Ungrouped variables", "definition": "random(500..1000)", "description": "", "templateType": "anything", "can_override": false}, "B1": {"name": "B1", "group": "Ungrouped variables", "definition": "random(1000..2000)", "description": "", "templateType": "anything", "can_override": false}, "B2": {"name": "B2", "group": "Ungrouped variables", "definition": "random(1000..2000)", "description": "", "templateType": "anything", "can_override": false}, "B3": {"name": "B3", "group": "Ungrouped variables", "definition": "random(1000..2000)", "description": "", "templateType": "anything", "can_override": false}, "B4": {"name": "B4", "group": "Ungrouped variables", "definition": "random(1000..2000)", "description": "", "templateType": "anything", "can_override": false}, "C1": {"name": "C1", "group": "Ungrouped variables", "definition": "random(1000..2000)", "description": "", "templateType": "anything", "can_override": false}, "C2": {"name": "C2", "group": "Ungrouped variables", "definition": "random(1000..2000)", "description": "", "templateType": "anything", "can_override": false}, "C3": {"name": "C3", "group": "Ungrouped variables", "definition": "random(1000..2000)", "description": "", "templateType": "anything", "can_override": false}, "C4": {"name": "C4", "group": "Ungrouped variables", "definition": "random(1000..2000)", "description": "", "templateType": "anything", "can_override": false}, "A1tot": {"name": "A1tot", "group": "Ungrouped variables", "definition": "A1", "description": "", "templateType": "anything", "can_override": false}, "A2tot": {"name": "A2tot", "group": "Ungrouped variables", "definition": "A1+A2", "description": "", "templateType": "anything", "can_override": false}, "A3tot": {"name": "A3tot", "group": "Ungrouped variables", "definition": "A1+A2+A3", "description": "", "templateType": "anything", "can_override": false}, "A4tot": {"name": "A4tot", "group": "Ungrouped variables", "definition": "A1+A2+A3+A4", "description": "", "templateType": "anything", "can_override": false}, "B1tot": {"name": "B1tot", "group": "Ungrouped variables", "definition": "B1", "description": "", "templateType": "anything", "can_override": false}, "B2tot": {"name": "B2tot", "group": "Ungrouped variables", "definition": "B1+B2", "description": "", "templateType": "anything", "can_override": false}, "B3tot": {"name": "B3tot", "group": "Ungrouped variables", "definition": "B1+B2+B3", "description": "", "templateType": "anything", "can_override": false}, "B4tot": {"name": "B4tot", "group": "Ungrouped variables", "definition": "B1+B2+B3+B4", "description": "", "templateType": "anything", "can_override": false}, "C1tot": {"name": "C1tot", "group": "Ungrouped variables", "definition": "C1", "description": "", "templateType": "anything", "can_override": false}, "C2tot": {"name": "C2tot", "group": "Ungrouped variables", "definition": "C1+C2", "description": "", "templateType": "anything", "can_override": false}, "C3tot": {"name": "C3tot", "group": "Ungrouped variables", "definition": "C1+C2+C3", "description": "", "templateType": "anything", "can_override": false}, "C4tot": {"name": "C4tot", "group": "Ungrouped variables", "definition": "C1+C2+C3+C4", "description": "", "templateType": "anything", "can_override": false}, "A0": {"name": "A0", "group": "Ungrouped variables", "definition": "random(-2300..-1900)", "description": "", "templateType": "anything", "can_override": false}, "B0": {"name": "B0", "group": "Ungrouped variables", "definition": "random(-3300..-2900)", "description": "", "templateType": "anything", "can_override": false}, "C0": {"name": "C0", "group": "Ungrouped variables", "definition": "random(-6300..-5900)", "description": "", "templateType": "anything", "can_override": false}, "Aavinc": {"name": "Aavinc", "group": "Ungrouped variables", "definition": "(A1+A2+A3+A4)/4", "description": "", "templateType": "anything", "can_override": false}, "Bavinc": {"name": "Bavinc", "group": "Ungrouped variables", "definition": "(B1+B2+B3+B4)/4", "description": "", "templateType": "anything", "can_override": false}, "Cavinc": {"name": "Cavinc", "group": "Ungrouped variables", "definition": "(C1+C2+C3+C4)/4", "description": "", "templateType": "anything", "can_override": false}}, "variablesTest": {"condition": "", "maxRuns": 100}, "ungrouped_variables": ["A1", "A2", "A3", "A4", "B1", "B2", "B3", "B4", "C1", "C2", "C3", "C4", "A1tot", "A2tot", "A3tot", "A4tot", "B1tot", "B2tot", "B3tot", "B4tot", "C1tot", "C2tot", "C3tot", "C4tot", "A0", "B0", "C0", "Aavinc", "Bavinc", "Cavinc"], "variable_groups": [], "functions": {}, "preamble": {"js": "", "css": ""}, "parts": [{"type": "numberentry", "useCustomName": false, "customName": "", "marks": 1, "scripts": {}, "customMarkingAlgorithm": "", "extendBaseMarkingAlgorithm": true, "unitTests": [], "showCorrectAnswer": false, "showFeedbackIcon": true, "variableReplacements": [], "variableReplacementStrategy": "originalfirst", "nextParts": [], "suggestGoingBack": false, "adaptiveMarkingPenalty": 0, "exploreObjective": null, "prompt": "<p>What is the average income for Project A?</p>", "minValue": "Aavinc", "maxValue": "Aavinc", "correctAnswerFraction": false, "allowFractions": false, "mustBeReduced": false, "mustBeReducedPC": 0, "precisionType": "dp", "precision": 0, "precisionPartialCredit": "50", "precisionMessage": "You have not given your answer to the correct precision.", "strictPrecision": false, "showPrecisionHint": true, "notationStyles": ["plain", "en", "si-en"], "correctAnswerStyle": "plain"}, {"type": "numberentry", "useCustomName": false, "customName": "", "marks": 1, "scripts": {}, "customMarkingAlgorithm": "", "extendBaseMarkingAlgorithm": true, "unitTests": [], "showCorrectAnswer": false, "showFeedbackIcon": true, "variableReplacements": [], "variableReplacementStrategy": "originalfirst", "nextParts": [], "suggestGoingBack": false, "adaptiveMarkingPenalty": 0, "exploreObjective": null, "prompt": "<p>What is the average income for Project B?</p>", "minValue": "Bavinc", "maxValue": "Bavinc", "correctAnswerFraction": false, "allowFractions": false, "mustBeReduced": false, "mustBeReducedPC": 0, "precisionType": "dp", "precision": 0, "precisionPartialCredit": "50", "precisionMessage": "You have not given your answer to the correct precision.", "strictPrecision": false, "showPrecisionHint": true, "notationStyles": ["plain", "en", "si-en"], "correctAnswerStyle": "plain"}, {"type": "numberentry", "useCustomName": false, "customName": "", "marks": 1, "scripts": {}, "customMarkingAlgorithm": "", "extendBaseMarkingAlgorithm": true, "unitTests": [], "showCorrectAnswer": false, "showFeedbackIcon": true, "variableReplacements": [], "variableReplacementStrategy": "originalfirst", "nextParts": [], "suggestGoingBack": false, "adaptiveMarkingPenalty": 0, "exploreObjective": null, "prompt": "<p>What is the average income for Project C?</p>", "minValue": "Cavinc", "maxValue": "Cavinc", "correctAnswerFraction": false, "allowFractions": false, "mustBeReduced": false, "mustBeReducedPC": 0, "precisionType": "dp", "precision": 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