{"id":"aqua_rat:22b1d7e98a361fc99502de35d2f39404","source_id":"aqua_rat","source_item_id":"22b1d7e98a361fc99502de35d2f39404","external_id":null,"program":null,"section":"math","category_code":"PHM","category":"Preparing for Higher Math","subcategory_code":null,"subcategory":null,"form_id":null,"passage_id":null,"position":null,"scored":true,"layout_warning":null,"stem":"A single refined oil can contains 20% impurities. After double–refining, it contains 4% impurities. How much of double-refined oil can be obtained from 30 litres of single refined oil?","stimulus":"","stimulus_html":null,"stem_html":"<p>A single refined oil can contains 20% impurities. After double–refining, it contains 4% impurities. How much of double-refined oil can be obtained from 30 litres of single refined oil?</p>","rationale_html":"<p>On double-refining impurity decreases from 20% to 4%, but the amount of pure oil in both cases remains constant,</p><p>i.e, 96% of double refined oil = 80% of single refined oil.</p><p>Let x be the quantity of double-refined oil</p><p>Then 96*x/100 = 80*30/100, x = 30*80 /96 = 25</p><p>C</p>","correct_answer":["C"],"equiv_key":"341a70d403a590f1125fbf20","has_media":false,"has_mathml":false,"has_table":false,"section_label":"Mathematics","options":[{"label":"A","content_html":"<p>24.0 litres</p>","ord":0},{"label":"B","content_html":"<p>24.8 litres</p>","ord":1},{"label":"C","content_html":"<p>25.0 litres</p>","ord":2},{"label":"D","content_html":"<p>25.5 litres</p>","ord":3},{"label":"E","content_html":"<p>26.5 litres</p>","ord":4}],"passage":null,"attribution":{"source_id":"aqua_rat","source_name":"AQuA-RAT algebra word problems with rationales","rights_holder":"Google DeepMind and the AQuA-RAT contributors","canonical_url":"https://github.com/google-deepmind/AQuA","retrieved_from":"https://raw.githubusercontent.com/google-deepmind/AQuA/master/","attribution":"Algebra word problems from the AQuA-RAT dataset (Ling et al., 2017), published by Google DeepMind under the Apache License 2.0.","disclaimer":"AQuA-RAT items are crowdsourced algebra problems, not ACT questions. They carry five answer choices in the pre-2025 ACT Mathematics style and no ACT reporting category. Useful for drilling Preparing for Higher Math content; not a substitute for a real form.","license":"Apache License 2.0. Crowdsourced by DeepMind and published for free use, including commercially.","redistributable":true,"item_count":508},"equivalents":[]}