SOLUTION: Mrs. Sanders had 80 coins. Some of them were 1-dollar coins, and some were 50 cent coins. The total amount added up to $50. How many coins of each kind were there.

SOLUTION: Mrs. Sanders had 80 coins. Some of them were 1-dollar coins, and some were 50 cent coins. The total amount added up to $50. How many coins of each kind were there.

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Question 263321: Mrs. Sanders had 80 coins. Some of them were 1-dollar coins, and some were 50 cent coins. The total amount added up to $50. How many coins of each kind were there.
Answer by richwmiller(17219) (Show Source): You can put this solution on YOUR website!
d+f=80
100d+50f=5000
d=20 f=60
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