You can put this solution on YOUR website! Andrea has 52 coins in dimes and quarters worth $10. How much of each coin does she have?
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Form 2 equations.
d + q = 52
10d + 25q = 1000
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Can you finish it?
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Another method:
If all 52 coins were dimes, it would be $5.20
Each dime that is replaced by a quarter adds 15 cents to the total.
1000 - 520 = 480
480/15 = 32 dimes replaced by quarters
--> 32 quarters and 20 dimes
