Question 786054: 62 coins in a jar, nickels and quarters, 8.70
Answer by stanbon(75887)   (Show Source):
You can put this solution on YOUR website! 62 coins in a jar, nickels and quarters, 8.70
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Equations:
Quantity:: n + q = 62 coins
Value:::: 5n+25q = 870 cents
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Modify for elimination:
5n + 5q = 310
5n + 25q= 870
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Subtract and slve for "q":
20q = 560
q = 28 (# of quarters)
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Solve for "n":
n + q = 62
n + 28 = 62
n = 34 (# of nickels)
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Cheers,
Stan H.
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