SOLUTION: paul has a collection of nickels and dimes that has a total value of $12.50. He has 150 coins in all. How many dimes does Paul have?
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Question 920653: paul has a collection of nickels and dimes that has a total value of $12.50. He has 150 coins in all. How many dimes does Paul have?
Answer by stanbon(75887) (Show Source): You can put this solution on YOUR website!
paul has a collection of nickels and dimes that has a total value of $12.50. He has 150 coins in all. How many dimes does Paul have?
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Value Eq::: 5n + 10d = 1250 cents
Quantity::: n + d = 150
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Modify::
n + 2d = 250
n + d = 150
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Subtract and solve for "d"::
d = 100 (# of dimes)
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n = 150-d = 50 (# of nickels)
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Cheers,
Stan H.
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