SBI PO 06 May 2017 Papers

Let A’s present age be x years.
∴ B’s present age
= (

x−6

2

+3) years
= (x−6+

6

2

) years
=

x

2

years
According to the question,

x−9

x 2 −6

=

9

4

⇒

x−9

x−12

=

9

8

⇒ 9x – 108 = 8x – 72
⇒ 9x – 8x = 108 – 72
⇒ x = 36

∴ B’s present age =

36

2

= 18 years