The ages of A and B are in the ratio of 8:5. If the sum of their ages is 39 years, what will be the ratio of their ages after 9 years?
8:5
10:11
8:11
11:8
Explanation:
According to the question,
=> 8x+5x=39.
=> 13x=39
=> x=39/13=3
Thus, ages of A and B is 24 and 15 respectively.
After 9 yr., ages of A and B will be 33 and 24.
So, A: B::11:8.