SOLUTION: Harry has a collection of coins consisting of dimes and quarters whose value is $17.60. The number of quarters exceeds the number of dimes by 8. Find the number of coins of each ki

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Question 1011669: Harry has a collection of coins consisting of dimes and quarters whose value is $17.60. The number of quarters exceeds the number of dimes by 8. Find the number of coins of each kind in the collection.
Answer by ikleyn(52798) About Me  (Show Source):
You can put this solution on YOUR website!
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Harry has a collection of coins consisting of dimes and quarters whose value is $17.60.
The number of quarters exceeds the number of dimes by 8. Find the number of coins of each kind in the collection.
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10*d + 25*q = 1760    (1)
q - d = 8             (2)

Solve this system. Express q via d from the second equation and the substitute it into the first equation.

Good luck!