SOLUTION: a girl has twice as many dimes as nickels. if she has a total of $0.75, how many of each of the coins does she have?

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Question 280478: a girl has twice as many dimes as nickels. if she has a total of $0.75, how many of each of the coins does she have?
Answer by Alan3354(69443) About Me  (Show Source):
You can put this solution on YOUR website!
D = 2N
10D + 5N = 75
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10*2N + 5N = 75
N = 3
D = 6