Question

Jake recorded a special Album for mothers day. His mom was so excited that she purchased 40% percent of the copies in the store. She has 80 copies of the CD's. How many CD's did the store have for sale.

Answer 1

Equate mom's percentage to quantity:

40% = 80

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Find 1%

1% = 80 ÷ 40 = 2

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Find 100% (Total):

100% = 2 x 100 = 200

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Answer; There are 200 CDs in the store for sale.