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February 28, 2015

February 28, 2015

Posted by **Laura** on Sunday, October 2, 2011 at 5:08pm.

Max has a collection of 210 coins consisting of nickels, dimes, and quarters. He has twice as many dimes as nickels, and 10 more quarters than dimes. How many coins of each kind does he have?

- algebra -
**PsyDAG**, Monday, October 3, 2011 at 2:25amD = 2N, Q = D+10

N + D + Q = 210

N + 2N + (2N + 10) = 210

Solve for N, then D and Q.

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