Indian Institute of Foreign Trade 2015 Solved Paper

(c) Let Arvind's Age in 2004 is A years 10
So, Rohini's Age = 3A years old
Now, in 2014
Arvind's Age = A + 10
Rohini's Age = 3A + 10
3A + 10 = A + 10 + 6
2A = 6 ⇒ A = 3
Rohini's Age in 2004 would be 9 years. Clearly she was born in year (2004 – 9) = 1995 year