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4 August, 22:25

Deanna gets 3 problems incorrect on a math quiz. Her score is 85%. How many questions are on the quiz?

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  1. 5 August, 00:38
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    20 questions.

    Step-by-step explanation:

    Let x be the number of questions on the quiz.

    85 % means 85 out of 100 (or 85 / 100)

    85 / 100 = 3/x

    --->100-85=15

    --->15/3=5

    --->100/5=20

    Meaning each question was worth 5% and there were 20 questions.
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