// Numbas version: exam_results_page_options
{"name": "Add two fractions with the same denominator", "extensions": [], "custom_part_types": [], "resources": [], "navigation": {"allowregen": true, "showfrontpage": false, "preventleave": false, "typeendtoleave": false}, "question_groups": [{"pickingStrategy": "all-ordered", "questions": [{"name": "Add two fractions with the same denominator", "tags": [], "metadata": {"description": "<p>This question tests a student's ability to add two fractions with the same denominator.</p>", "licence": "Creative Commons Attribution 4.0 International"}, "statement": "<p>Add the following fractions using the formula $\\dfrac{a}{b}+\\dfrac{c}{b}=\\frac{\\boxed{a}+\\boxed{c}}{\\boxed{b}}=\\frac{\\boxed{a+c}}{\\boxed{b}}$.</p>\n<p>An example of a correct calculation would be $\\dfrac{1}{2}+\\dfrac{3}{2}=\\frac{\\boxed{1}+\\boxed{3}}{\\boxed{2}}=\\frac{\\boxed{4}}{\\boxed{2}}$.</p>\n<p>Note the final fraction should be left as it is and should not be entered in lowest form (if this is different).</p>", "advice": "<p>The correct calculation is $\\dfrac{\\var{a}}{\\var{d}}+\\dfrac{\\var{b}}{\\var{d}}=\\frac{\\boxed{\\var{a}}+\\boxed{\\var{b}}}{\\boxed{\\var{d}}}=\\frac{\\boxed{\\var{a+b}}}{\\boxed{\\var{d}}}$.</p>", "rulesets": {"std": ["all"]}, "extensions": [], "builtin_constants": {"e": true, "pi,\u03c0": true, "i": true}, "constants": [], "variables": {"a": {"name": "a", "group": "Ungrouped variables", "definition": "random(1..99)", "description": "<p>Numerator of the first fraction.</p>", "templateType": "anything", "can_override": false}, "d": {"name": "d", "group": "Ungrouped variables", "definition": "random(2..99)", "description": "<p>The common denominator.</p>", "templateType": "anything", "can_override": false}, "b": {"name": "b", "group": "Ungrouped variables", "definition": "random(1..99)", "description": "<p>Numerator of the second fraction.</p>", "templateType": "anything", "can_override": false}}, "variablesTest": {"condition": "(a<>1 or b<>3 or d<>2) and gcd(a,d)=1 and gcd(b,d)=1", "maxRuns": 100}, "ungrouped_variables": ["a", "b", "d"], "variable_groups": [], "functions": {}, "preamble": {"js": "document.createElement('fraction');\ndocument.createElement('numerator');\ndocument.createElement('denominator');", "css": "fraction {\n  display: inline-block;\n  vertical-align: middle;\n}\nfraction > numerator, fraction > denominator {\n  float: left;\n  width: 100%;\n  text-align: center;\n  line-height: 2.5em;\n}\nfraction > numerator {\n  border-bottom: 1px solid;\n  padding-bottom: 5px;\n}\nfraction > denominator {\n  padding-top: 5px;\n}\nfraction input {\n    line-height: 1em;\n}\n\nfraction .part {\n    margin: 0;\n}\n\n.table-responsive, .fractiontable {\n  display:inline-block;\n}\n.fractiontable {\n  padding: 0; 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