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alex spent 3/7 of his money he gave 1 /4 of the remainder to his sistet he haf $120 left how much money did he in the beginning

Verified Answer :

lazygal

Let his total money be x.
He spent (3/7)x of his money.
He gave 1/4(x-3/7x) to his sister. 
which is : (1/4)(4/7)x = (1/7)x 
Now,
How much money he have in the beginning = 
(3/7)x+(1/7)x+120=x
(4/7)x+120=x
120=x-(4/7)x
120=(3/7)x
x=1207/3 [cross multiplication]
x=280.

So, Alex had $280 in the beginning.

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