4 years ago, the ratio of 1/2 of Richa’s age at that time and 4 times of Rahul’s age at that time was 1: 2. 6 years hence, 1/3 of Richa’s age at that time will be less than Rahul’s age at that time by 3 years. What is the Rahul’s present age?
1
12 yr.
2
10 yr.
3
15 yr.
4
18 yr.
5
20 yr.