Question 940226: John has a total of 20 coins in quarters and nickels, that are worth $3.60, how many of each coin does he have?
Answer by stanbon(75887)   (Show Source):
You can put this solution on YOUR website! John has a total of 20 coins in quarters and nickels, that are worth $3.60, how many of each coin does he have?
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# of coins Eq:: n + q = 20
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Value of coins:: 5n + 25q = 360
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n + q = 20
n + 5q = 72
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Subtract and solve for "q"::
4q = 52
q = 13 (# of quarters)
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n = 20-13 = 7 (# of nickels)
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Cheers,
Stan H.
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