SOLUTION: a student correctly answered 15 test questions. if his percentage grade was 83% how many questions were on the test?

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Question 656931: a student correctly answered 15 test questions. if his percentage grade was 83% how many questions were on the test?
Answer by fcabanski(1391)   (Show Source): You can put this solution on YOUR website!
Part/whole x 100 = %.


15/x x 100 = 83 or 15/x = .83


15 = .83x


15/.83 = x = about 18

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