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serviceme23
serviceme23 serviceme23
  • 18-01-2017
  • Mathematics
Answered

15 books to 21 books percent of change

Verified Answer :

bcalle
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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