SOLUTION: I had a sum of money.I spent the 1/5 of the money and 50$.Than I spent the 1/5 of the remaining money and 30$.Once again , I spent the 1/5th of the remaining money and 20$.At last,

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Question 177805: I had a sum of money.I spent the 1/5 of the money and 50$.Than I spent the 1/5 of the remaining money and 30$.Once again , I spent the 1/5th of the remaining money and 20$.At last,I had 100$ left with me.HOw much money did i have at the beginning? PLESE HELP !!!!!!!!!! OH GOD !!!!!!!!!!THANKS !!!!!!!!!!!!
Answer by Mathtut(3670) About Me  (Show Source):
You can put this solution on YOUR website!
lets call the sum of money S
:
(1/5)S+50+(1/5)S+30+(1/5)S+20+100=S
:
(3/5)S+200=S....combined like terms on left side
:
(2/5)S=200.....subtracted (3/5)S from both sides
:
highlight%28S=500%29dollars to begin. (multiplied both sides by 5/2)