SOLUTION: Carolyn has $2.75 in her purse in nickels and dimes. The number of nickels is 5 less than three times the number of dimes. Find the number of each type of coin.

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Question 1054577: Carolyn has $2.75 in her purse in nickels and dimes. The number of nickels is 5 less than three times the number of dimes. Find the number of each type of coin.
Answer by Fombitz(32388) About Me  (Show Source):
You can put this solution on YOUR website!
5N%2B10D=275
N=3D-5
Substituting,
5%283D-5%29%2B10D=275
15D-25%2B10D=275
25D=300
D=12
So then,
N=3%2812%29-5
N=36-5
N=31