SOLUTION: Sally has twice as many times as nickels. The total value is $3.50. How many nickels does she have?

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Question 110594: Sally has twice as many times as nickels. The total value is $3.50. How many nickels does she have?
Answer by josmiceli(19441) About Me  (Show Source):
You can put this solution on YOUR website!
N = number of nickels
D = number of dimes
5N+%2B+10D+=+350
D+=+2N
5N+%2B+10%2A2N+=+350
25N+=+350
N+=+14 answer
D+=+28
check
5N+%2B+10D+=+350
70+%2B+280+=+350
350+=+350
OK