SOLUTION: A change purse contains a total of 70 quarters and dimes. The total value of the coins is $9.90. How many coins of each type does the purse contain?

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Question 1055165: A change purse contains a total of 70 quarters and dimes. The total value of the coins is $9.90. How many coins of each type does the purse contain?

Answer by ewatrrr(24785) About Me  (Show Source):
You can put this solution on YOUR website!
25q + 10(70-q) = 990 CENTS makes sense
solve for q, the number of quarters and then find the number of dimes 70-q