# SOLUTION: there are 9 books 55% of 9 books are out,how many are left? solve this problem using a proportion show all steps.and explain

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 Question 466368: there are 9 books 55% of 9 books are out,how many are left? solve this problem using a proportion show all steps.and explainAnswer by nerdybill(6958)   (Show Source): You can put this solution on YOUR website! there are 9 books 55% of 9 books are out,how many are left? solve this problem using a proportion show all steps.and explain . since 55% are out 100-55 = 45% are left . Let x = books left then x/9 = 45/100 (this is your proportion) cross multiplying: 100x = 9*45 100x = 405 x = 4.05 since you can't have fractional book, you have to round down: there are 4 books left