SOLUTION: ali's father was five times as old as Ali 7 1/2 years ago.After 7 1/2 years father will be twice as old as ALI .what are their present ages? a,12 1/2,32 1/2 b,5,25 c,12,32 d

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Question 997076: ali's father was five times as old as Ali 7 1/2 years ago.After 7 1/2 years father will be twice as old as ALI .what are their present ages?
a,12 1/2,32 1/2 b,5,25 c,12,32 d,5 1/2,25 1/2

Found 2 solutions by mananth, josgarithmetic:
Answer by mananth(16946)   (Show Source): You can put this solution on YOUR website!
7.5 years ago
ali -----x
father 5x
after 7.5 years
ali ---x+15
father 5x+15
2(x+15) =5x+15
2x+30 = 5x+15
3x =15
x=5
Ali present age = 5 +7.5 = 12.5 years
father's age =( 5 * 5)+7.5 = 32.5 years

Answer by josgarithmetic(39617)   (Show Source): You can put this solution on YOUR website!
x, Ali's age
y, Father's age





---------obviously using elimination method; you finish this.

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