// Numbas version: exam_results_page_options
{"name": " Simultaneous Equations Chemistry", "extensions": [], "custom_part_types": [], "resources": [], "navigation": {"allowregen": true, "showfrontpage": false, "preventleave": false, "typeendtoleave": false}, "question_groups": [{"pickingStrategy": "all-ordered", "questions": [{"functions": {}, "ungrouped_variables": ["A", "B", "Total", "CA", "CB", "CT"], "name": " Simultaneous Equations Chemistry", "tags": [], "advice": "", "rulesets": {}, "parts": [{"prompt": "<p>$A=\\;$[[0]]&nbsp;litres</p>\n<p style=\"text-align: left;\">$B=\\;$[[1]]&nbsp;litres</p>", "variableReplacements": [], "variableReplacementStrategy": "originalfirst", "gaps": [{"vsetrangepoints": 5, "expectedvariablenames": [], "checkingaccuracy": 0.001, "type": "jme", "showpreview": true, "variableReplacements": [], "variableReplacementStrategy": "originalfirst", "showCorrectAnswer": true, "scripts": {}, "answer": "{A}", "marks": 1, "checkvariablenames": false, "checkingtype": "absdiff", "vsetrange": [0, 1]}, {"vsetrangepoints": 5, "expectedvariablenames": [], "checkingaccuracy": 0.001, "type": "jme", "showpreview": true, "variableReplacements": [], "variableReplacementStrategy": "originalfirst", "showCorrectAnswer": true, "scripts": {}, "answer": "{B}", "marks": 1, "checkvariablenames": false, "checkingtype": "absdiff", "vsetrange": [0, 1]}], "showCorrectAnswer": true, "scripts": {}, "marks": 0, "type": "gapfill"}], "extensions": [], "statement": "<p>A chemist wishes to make &nbsp;$\\var{Total}$ litres of &nbsp;$\\var{CT}$ % acid solution.</p>\n<p>She has at her disposal chemical <i>A</i>, which is &nbsp;$\\var{CA}$ % acid, and chemical <i>B</i>, which is $\\var{CB}$ % acid.</p>\n<p></p>\n<p>CB = $\\var{CB}$</p>\n<p>Find the volume of A and B needed.</p>", "variable_groups": [], "variablesTest": {"maxRuns": 100, "condition": ""}, "preamble": {"css": "", "js": ""}, "variables": {"A": {"definition": "random(3..6)", "templateType": "anything", "group": "Ungrouped variables", "name": "A", "description": ""}, "B": {"definition": "A+2", "templateType": "anything", "group": "Ungrouped variables", "name": "B", "description": ""}, "CB": {"definition": "CA+5", "templateType": "anything", "group": "Ungrouped variables", "name": "CB", "description": ""}, "CA": {"definition": "random(3..6)", "templateType": "anything", "group": "Ungrouped variables", "name": "CA", "description": ""}, "Total": {"definition": "A+B", "templateType": "anything", "group": "Ungrouped variables", "name": "Total", "description": ""}, "CT": {"definition": "CB-4", "templateType": "anything", "group": "Ungrouped variables", "name": "CT", "description": ""}}, "metadata": {"description": "", "licence": "Creative Commons Attribution 4.0 International"}, "type": "question", "showQuestionGroupNames": false, "question_groups": [{"name": "", "pickingStrategy": "all-ordered", "pickQuestions": 0, "questions": []}], "contributors": [{"name": "steve kilgallon", "profile_url": "https://numbas.mathcentre.ac.uk/accounts/profile/268/"}]}]}], "contributors": [{"name": "steve kilgallon", "profile_url": "https://numbas.mathcentre.ac.uk/accounts/profile/268/"}]}