15 questions.
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To achieve an 87 percent score on a 125-question test, you need to correctly answer 87 percent of the questions. This means you need to answer 109 questions correctly (0.87 x 125 = 108.75, rounded up). Therefore, you can get 16 questions wrong (125 - 109 = 16).
15/1.25 = 12 Therefore, the number that 15 is 125 percent of, is 12.
12.5% of 12= 12.5% * 12= 0.125 * 12= 1.5
To achieve 75 percent on a test with 125 questions, you need to answer at least 94 questions correctly (since 75% of 125 is 93.75, which rounds up to 94). Therefore, you can miss out on a maximum of 31 questions (125 - 94 = 31) to still reach that passing score.
12