SOLUTION: Maggie has been collecting nickels and dimes for 2 weeks, and she has a total of 5.15. If she has 7 more nickles than she has dimes, how many of each coin does she have?
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Question 998032: Maggie has been collecting nickels and dimes for 2 weeks, and she has a total of 5.15. If she has 7 more nickles than she has dimes, how many of each coin does she have?
Answer by CubeyThePenguin(3113) (Show Source): You can put this solution on YOUR website!
n = number of nickels
d = number of dimes
5n + 10d = 515
n = d + 7
Substitute n = d + 7.
5(d + 7) + 10d = 515
5d + 35 + 10d = 515
15d = 480
d = 32
There are 32 dimes and 39 nickels.
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