SOLUTION: I have twice as many nickels as quarters. If the coins are worth $4.90 how many quarters are there?

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Question 165238: I have twice as many nickels as quarters. If the coins are worth $4.90 how many quarters are there?
Answer by checkley77(12844) About Me  (Show Source):
You can put this solution on YOUR website!
.25x+.05(2x)=4.90
.25x+.10x=4.90
.35x=4.90
x=4.90/.35
x=14 quarters.
2*14=28 nickles.
Proof:
.25*14+.05*28=4.90
3.50+1.40=4.90
4.90=4.90