SOLUTION: Mrs. Sanders had 80 coins. Some of them were $1.00 coins and the rest were .50 cent coins. The total amount added up to $50.00. How many coins of each kind were there?

Question 808802: Mrs. Sanders had 80 coins. Some of them were $1.00 coins and the rest were .50 cent coins. The total amount added up to $50.00. How many coins of each kind were there?
Answer by josmiceli(19441) (Show Source): You can put this solution on YOUR website!
Let = number of $1 coins
Let = number of $.50 coins
--------------
(1)
(2)
-------------------
(1)
Substitute this into (2)
(2)
(2)
(2)
(2)
(2)
and, since
(1)
(1)
There are 20 $1 coins and 60 $.50 coins
check:
(2)
(2)
(2)
OK

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