Question 1091999: 7. Joey has $5.75 made up of all dimes and quarters. If Joey has 38 coins, how many of
each coin does he have? Answer by ikleyn(52903) (Show Source):
Let Q be the number of quarters.
Then the number of dimes is (38-Q).
Your "value" equation is
25Q + 10*(38-Q) = 575 cents.
Simplify and solve it for Q.
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