SOLUTION: On a table are two boxes. One box contains only 50c coins and the other contains only 20c coins. The total value of the contents of each box is the same, but there are 300 more coi

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Question 1112324: On a table are two boxes. One box contains only 50c coins and the other contains only 20c coins. The total value of the contents of each box is the same, but there are 300 more coins in the box with 20c coins. How many 50c coins are there?
Answer by josgarithmetic(39617) About Me  (Show Source):
You can put this solution on YOUR website!
x of the 20c coins
y of the 50c coins

system%2820x=50y%2Cx-y=300%29
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2x=5y%2Cx=y%2B300
2%28y%2B300%29=5y
2y%2B600=5y
3y=600
highlight%28y=200%29----------the number of the 50c coins