SOLUTION: john has 20 coins totaling $3.20. if he has only dimes and quarters how many of each coin does he have?

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Question 1165397: john has 20 coins totaling $3.20. if he has only dimes and quarters how many of each coin does he have?
Answer by josgarithmetic(39621) About Me  (Show Source):
You can put this solution on YOUR website!
d dimes
q quarters
d%2Bq=20
or
d=20-q

25q%2B10%2820-q%29=320
.
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