If 8 books cost 9.60 how much do 10 books cost?

Answer 1

Hello Kathy,

You can set proportions as follows:

books 8 10

____ ___ = ____

cost 9.60 x

You can cross-multiply the diagonals from the 2 fractions: 9.60 •10 = 8•x ----> 96 = 8x

Divide both sides by 8 and you get: 12 = x

---> If 8 books cost $9.60, 10 books cost $12.00.

Cheers!