Homework Help: math

Posted by MP on Thursday, January 17, 2013 at 11:37am.

In Ethan’s piggybank there are nickels, dimes and quarters. There are 3 times as many quarters as nickels, and 5 more dimes than nickels. How many of each kind of coins are there? Ethan has saved a total of $3.20.

math - PsyDAG, Thursday, January 17, 2013 at 6:32pm
Q = 3N and D = 5N

.05N + .10D + .25Q = .05N + .10(5N) + .25(3N) = 3.20

Calculate for N, then Q and D.

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