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Mathematics 9 Online
OpenStudy (anonymous):

A coin collection contains 29 coins made up of pennies, nickles, and quarters. The number of quarters is 8 less than the number of pennies. The total face value of the coins is $1.77. How many of each denomination are there?

OpenStudy (phi):

How many of each denomination are there? The question is asking for the number of each type of coin. there are 3 types of coins. That means you have 3 unknowns to solve for 3 unknowns, you need 3 equations. The very first step is pick 3 variable names and label them. Can you do that ?

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