Posted by Emily on Sunday, August 24, 2008 at 6:27pm.
Q+D+N=30
.25Q+.10D +.05N=5.50
D=2N
Yes, three equations, three unknowns, enought information.
Ah, ok you made everything a lot simpler. Thanks!! :-)
A collection of 30 coins worth $5.50 consists of nickels, dimes, and quarters. There are twice as many dimes as nickels. How many quarters are there?
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