1.

The ratio of the present age of Mala to that of Sudha is 6:7. The ratio of their ages 8 years hence would be 8 : 9 . What will be the ratio of their ages after 12 years ?

Answer»

9 : 10



M/S = 6/7 = M = 6/7S
M+8/S+8 = 8/9
Therefore, 9M + 72 = 8S + 64
= 9x 6/7 S + 72 = 8S + 64
Solving this, S = 28, M = 24
Therefore, After 12 YRS, ratio = 24 + 12/28 + 12 = 36/40 = 9/10



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