SOLUTION: Aviva has a total of 67 coins, all of whick are either dimes or nickels. The total value of the coins is $5.35. Fine the number of each type of coin.

Question 677250: Aviva has a total of 67 coins, all of whick are either dimes or nickels. The total value of the coins is $5.35. Fine the number of each type of coin.
Answer by stanbon(75887) (Show Source): You can put this solution on YOUR website!
Aviva has a total of 67 coins, all of whick are either dimes or nickels. The total value of the coins is $5.35. Fine the number of each type of coin.
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Quantity Eq::: n + d = 67 coins
Value EQ::::: 5n + 10d = 535 cents
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Divide thru the Value Equation by 5:
n + d = 67
n + 2d = 107
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Subtract and solve for "d"
d = 40 (# of dimes)
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Solve for "n":
n + d = 67
n = 27 (# of nickels)
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Cheers,
Stan H.
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