SOLUTION: Tony has $2.50 in nickels and dimes. He has twice as many dimes as nickels. How many does he have of each?

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Question 185286: Tony has $2.50 in nickels and dimes. He has twice as many dimes as nickels. How many does he have of each?
Answer by vleith(2983) About Me  (Show Source):
You can put this solution on YOUR website!
Let d be the dimes and n be the nickels
Given d+=+2n
10d+%2B+5n+=+250
10%2A2n+%2B+5n+=+250
25n+=+250
n+=+10
d+=+2%2A10 = 20
Does 20 dimes and 10 nickels result in $2.50??