SBI PO 30 April 2017 Papers

A’s present age = x years
∴ B’s present age
= (x + 18) years
C’s present age = 2x years
According to the question,

x+18+6

2x

=

3

2

⇒ x + 34 = 3x
⇒ 2x = 24 ⇒ x = 12
∴ B’s present age = 18 + 12= 30 years
∴ B’s age 4 years ago = 30 – 4 = 26 years