SOLUTION: Alex spent 3/7 of his money. He gave 1/4 of the remainder to his sister. He had $120 left. How much money did he have in the beginning?

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Question 491874: Alex spent 3/7 of his money. He gave 1/4 of the remainder to his sister. He had $120 left. How much money did he have in the beginning?
Answer by rfer(16322) About Me  (Show Source):
You can put this solution on YOUR website!
120/(3/4)=
120*4/3=160
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160/(4/7)=
160*7/4=$280