SOLUTION: Lucy has 8 coins, all of which are quarters and dimes. In all, they're worth $1.55. How many of each kind of coin does Lucy have?

Question 1078702: Lucy has 8 coins, all of which are quarters and dimes. In all, they're worth $1.55. How many of each kind of coin does Lucy have?
Answer by Alan3354(69443) (Show Source): You can put this solution on YOUR website!
Lucy has 8 coins, all of which are quarters and dimes. In all, they're worth $1.55. How many of each kind of coin does Lucy have?
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Q + D = 8 (# of coins)
25Q + 10D = 155 (value)
===================
Think about it:
The # of Q's has to be an odd # < 8.
7Q = 175 too much
5Q = 125
3D = 30
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--> $1.55
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