The ages of A and B are in the ratio 5 : 7. Five years ago, their ages were iii the ratio 5 : 8. The respective present ages of A and B (in years) are:
Let age of A be 5xÂ
so we get age of B =7x
Now by condition
(5x-5:7x-5) =5:8
we get 40x-40=35x-25
we get 5x=15
x=3
So present ages are 15 and 21 respectively
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