Question 892202: I have the same number of quarters,dimes,and nickels. In all I have $4 in change. How many of each coins do I have?
Answer by robertb(5830)   (Show Source):
You can put this solution on YOUR website! Let q = # of quarters, d = # of dimes, and n = # of nickels
Then q = d = n, and 0.25q + 0.10d + 0.05n = 4.00.
==> 0.25q + 0.10q + 0.05q = 4.00
==> 0.40q = 4.00, or
q = 10 quarters.
Hence there are also 10 dimes and 10 nickels.
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