Problem:
Brianna is using part of the money she earned on her weekend job to buy several equally-priced CDs. She used one fifth of her money to buy one third of the CDs. What fraction of her money will she have left after she buys all the CDs?
Answer Choices:
A.
B.
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E.
Solution:
The number of CDs that Brianna will finally buy is three times the number she has already bought. The fraction of her money that will be required for all the purchases is . The fraction she will have left is .
Answer: .
The problems on this page are the property of the MAA's American Mathematics Competitions