Amberro12
Amberro12
18-04-2018
Mathematics
contestada
Percent change
15 books to 21 books
Respuesta :
musiclover10045
musiclover10045
18-04-2018
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
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