2005 AMC 10B Problems/Problem 5
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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 the money to buy one third of the CD's. What fraction of the money will she have left once she buys the CD's?
Solution
Since she will use 
of her money to buy 
of the CD's, she will use 
of her money to buy all the CD's. Thus, she will have 
of her money left. Hence, the answer is 
