{"id":"cb_practice_pdf:t8-math-m2-q15","source_id":"cb_practice_pdf","source_item_id":"t8-math-m2-q15","external_id":null,"ibn":null,"question_id":null,"program":"SAT","module":"math","domain_code":null,"domain":null,"skill_code":null,"skill":null,"difficulty":null,"score_band":null,"answer_type":"mcq","answer_source":"rationale","layout_warning":null,"form_id":"cb_practice_pdf:test-8","module_number":2,"position":15,"stem":"A bowl^- contains 20 ounces of water. When the^- bowl is uncovered, the amount of water in the bowl decreases by 1 ounce every 4 days. If 9 ounces of water remain in this bowl, for how many days has it been uncovered?","stimulus":"","stimulus_html":null,"stem_html":"<p>A bowl^- contains 20 ounces of water. When the^- bowl is uncovered, the amount of water in the bowl decreases by 1 ounce every 4 days. If 9 ounces of water remain in this bowl, for how many days has it been uncovered?</p>","rationale_html":"<p>20 Choice D is correct. It’s given that the bowl starts with ounces of water and has 9 ounces of water remaining after a period of time has passed. The amount of water the bowl has lost during the time period can be found by subtracting the remaining amount of water from the amount of water the bowl starts with, which 20-9 yields ounces, or 11 ounces. This means the bowl loses 11 ounces of water during that period of time. It’s given that the amount of water decreases by 1 ounce every 4 days. Letting t represent the number of days the bowl has been 1 11 = uncovered, it follows that 4 . Multiplying both sides of this equation by 4t t = yields t 44. Therefore, the bowl has been uncovered for 44 days. Choice A is incorrect and may result from conceptual or calculation errors. Choice B is incorrect and may result from conceptual or calculation errors. 1 9 1 11 = = Choice C is incorrect. This is the value of t for the equation 4 , not 4 . t t</p>","correct_answer":["D"],"has_media":false,"has_mathml":false,"has_table":false,"source_created_at":null,"source_updated_at":null,"options":[{"label":"A","content_html":"<p>3</p>","ord":0},{"label":"B","content_html":"<p>7</p>","ord":1},{"label":"C","content_html":"<p>36</p>","ord":2},{"label":"D","content_html":"<p>44</p>","ord":3}],"attribution":{"source_id":"cb_practice_pdf","source_name":"College Board full-length SAT practice tests (PDF)","rights_holder":"College Board","canonical_url":"https://satsuite.collegeboard.org/practice/practice-tests/paper","retrieved_from":"https://satsuite.collegeboard.org/practice/practice-tests/paper","attribution":"Full-length SAT practice tests 4–11 © College Board, published free at satsuite.collegeboard.org.","disclaimer":"Extracted from PDF layout: equations, figures and tables do not survive intact. Use the original PDFs for anything the text renders poorly. SAT® is a trademark registered by the College Board, which is not affiliated with and does not endorse this project.","license":"College Board copyright. Free to download; not licensed for redistribution.","redistributable":false,"item_count":905}}