Question

A student got 15 questions correct on a math test. If their score was 75%, how many problems were on the test?
75% = 75 / 100 = 0.75

15 / 0.75 = 20

OR

75 % = 3 / 4

15 / ( 3 / 4 ) = 15 • 4 / 3 = 60 / 3 = 20

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