5 years ago the ratio of the ages of A and B was 4 : 5 and after 15 years the ratio becomes 8 : 9. What is the present age of B?
1
20 years
2
25 years
3
30 years
4
35 years
5
None of these
5 years ago the ratio of the ages of A and B was 4 : 5 and after 15 years the ratio becomes 8 : 9. What is the present age of B?