serviceme23
serviceme23
18-01-2017
Mathematics
contestada
15 books to 21 books percent of change
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bcalle
bcalle
18-01-2017
Percent change formula is:
change/original * 100
(21-15)/15 * 100
6/15 * 100
.4 * 100
40% since the number of books went UP it is a percent increase.
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