IBPS RRB Office Assistant 2018 Paper

According to the question,
Sum of A, B and C present age = 98 - 4 × 3= 98 - 12 = 86 yr
Hence, present age of C
= (A + B + C) - (A + B) = 86 - (32 + 23)
= 86 - 55 = 31 yr
∴ Required four year hence age of C = 31 + 4= 35 yr