teresachristian teresachristian

09-03-2018
Mathematics

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All books in a store are being discounted by 40%. let x represent the regular price of any book in the store which expression describes the sale price of a book ?

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mikeysettles2 mikeysettles2

09-03-2018

To find the sale price we can set up a proportion. 25/100 = x/48. We keep the 100 and 48 both on the bottom of the fraction since they represent the "whole". x represents the discount off the full price of the dress. To solve this proportion, we cross multiply, yielding 48 * 25 = 100x. Alternatively, if you notice that 25/100 ...

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