Percent change 15 books to 21 books

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asked Nov 16, 2019 63.6k views

1 Answer

Sandric · Answer 1 · 2019-11-21T00:46:03+0000

1st step is to find the difference:
21 - 15 = 6 books

now divide the difference by the original quantity:

6 / 15 = 0.4

multiply that by 100 to get the percentage:

0.4 x 100 = 40% increase

Percent change 15 books to 21 books

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