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Weekly Problem 50 - 2014

Stage: 3 and 4 Challenge Level: Challenge Level:1

Cheryl finds a bag of coins. There are 50 coins inside and the value of the contents is £1.81. Given that it contains only two-pence and five-pence coins, how many more five-pence coins are there inside the bag than two-pence coins?

This problem is taken from the UKMT Mathematical Challenges.

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