SOLUTION: Carole has 70 dimes and quarters. Her quarters are worth as much as her dimes. How many quarters does she have?

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Question 915527: Carole has 70 dimes and quarters. Her quarters are worth as much as her dimes. How many quarters does she have?
Answer by Alan3354(69443) About Me  (Show Source):
You can put this solution on YOUR website!
d + q = 70 (# of coins)
10d = 25q (value of coins)