You can put this solution on YOUR website! nickels and dime are worth 7.00 she has 88 coins how many dimes does she have?
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Quantity:: n + d = 88 coins
Value:: 5n+10d = 700 cents
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Modify for elimination:
n + d = 88
n + 2d = 140
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Subtract and solve for "d"::
d = 52 (# of dimes)
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Solve for "n"::
n + d = 88
n + 52 = 88
n = 36 (# of nickels)
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Cheers,
Stan H.
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