Answer to Question #18283 in Algebra for Maliea

Question #18283

charlie answered 15 questions of his homework in math. this represents 75% of his math homework.how many questions are there in his math homework?

Expert's answer

Let's denote total amount by x. So we have:
15 - 75%
x - 100%
hence x=15*1005/75%=20

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