Please help with this math problem!
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Please help with this math problem!

[From: ] [author: ] [Date: 11-10-11] [Hit: ]
and quarters in a jar. When they count the change in the jar, there are twice as many nickles as there are quarters. If there is $15.30 in dimes, and $74.......
My daughter has the following math problem, and between 4 people (3 of us adults), we couldn't figure out how to solve it. She's supposed to come up with the equation and the solution:

The Jaspers collect nickles, dimes, and quarters in a jar. When they count the change in the jar, there are twice as many nickles as there are quarters. If there is $15.30 in dimes, and $74.80 in all, how many quarters are there?

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x=quarters
2x=nickels
153 dimes

25(x)+5(2x)+1530=7480

25x+10x=5950
35x=5950
x=170 quarters

check answer

170 quarters >>4250
340 nickels >> 1700
153 dimes >> 1530

4250+1700+1530=7480 (checks)

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170 quarters 340 nickels 153 dimes :)
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