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Age 11 to 14 Challenge Level:
We have exactly $100$ coins. There are five different values of coins.
We have decided to buy a piece of computer software for $39.75$. We have the correct money, not a penny more, not a penny less!
Can you discover what the five different types of coins are worth and how many of each we have saved?
NRICH is part of the family of activities in the Millennium Mathematics Project.