Average age of Rohan and Simran is 22 years. If 19 years hence | Data Interpertation & airthmatic

Average age of Rohan and Simran is 22 years. If 19 years hence from now, ratio of ages of Rohan and Simran will be 18 : 23 respectively, then find the difference between their ages 13 years ago from now.

(a) 10 years
(b) 12 years
(c) 6 years
(d) 8 years
(e) None of these