Posted by **Pam** on Monday, February 8, 2010 at 7:42pm.

If I have 27 coins (dimes and nickels) that total $1.95. How many are dimes and how many are nickels

- Math -
**PsyDAG**, Tuesday, February 9, 2010 at 11:20am
D = # of Dimes, N = # of nickels

D + N = 27, therefore

D = 27 - N

.10D + .05N = 1.95

Substitute 27 - N for D in second equation and solve for N. Put that value in the first equation to find D. To check, put both in the second equation.

I hope this helps.

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