SOLUTION: A vending machine contains a total of 395 quarter and dimes. The total values of the coins Is $66.80. How many of each coins are there?

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Question 1201190: A vending machine contains a total of 395 quarter and dimes. The total values of the coins Is $66.80. How many of each coins are there?
Answer by josgarithmetic(39620) About Me  (Show Source):
You can put this solution on YOUR website!
c quarters
395-c dimes

25c%2B10%28395-c%29=6680
Simplify and solve...