(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