Sixth Grade Challenging Math

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6-49)   Answer

                          No

Solution: Assume Kelly has 100 books. Jenny would have 100 + 15 = 115 books.

(115-100)/100 = 15%

The key is what you use as the denominator. To compare Kelly's books to Jenny's books, the denominator needs to be 115.

(115-100)/115 = 13%. Kelly has 13% fewer books than Jenny.