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26-01-2017
Mathematics

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Amanda has 150 books in her library collection. Twenty-nine of the books are mysteries.

What percent of the books are mysteries? Round to the nearest percent, if necessary.

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26-01-2017

percent means parts out of 100
x%=x/100
mysteris/total=29/150

29/150=x/100
times both sides by 1500
290=15x
divide both sides by 15
19.33333333=x

answer is 19% (rounded)

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