LIC AAO Model Paper 3

Three years ago.
Sum of the ages of A and B
= 18 x 2 = 36 years
∴ Sum of the present ages of A and B
= 36 + 6 = 42 years
Sum of the present ages of A, B and C
= 3 x 22 = 66 years
∴ Present age of C = 66 - 42
= 24 years