SOLUTION: A child is collecting quarters and dimes. if she has a total of 25 coins, and the number of quarters is 9 more than the number of dimes, how many of each type does she have?

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Question 1081825: A child is collecting quarters and dimes. if she has a total of 25 coins, and the number of quarters is 9 more than the number of dimes, how many of each type does she have?
Answer by josgarithmetic(39614) About Me  (Show Source):
You can put this solution on YOUR website!
q quarters
d dimes
system%28q%2Bd=25%2Cq=d%2B9%29

Simple substitution: %28d%2B9%29%2Bd=25
2d%2B9=25
2d=16
d=8-----------8 dimes
-
q=17---------17 quarters