Question 479287: Sally has 82 coins totaling $5.50.If she has only dimes and nickels,how many of each coins does she have?
Answer by stanbon(75887)   (Show Source):
You can put this solution on YOUR website! Sally has 82 coins totaling $5.50.If she has only dimes and nickels,how many of each coins does she have?
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Equations:
Quantity Eq: d + n = 82
Value Eq: 10d +5n = 550 cents
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Multiply thru the Quantity Eq. by 5 to get:
5d + 5n = 5*82
10d + 5n = 550
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Subtract and solve for "d":
5d = 140
d = 28 (# of dimes)
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Solve for "n":
d+n = 82
28 + n = 82
n = 54 (# of nickels)
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Cheers,
Stan H.
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