IBPS RRB Officer Prelims 14 Nov 2016 Shift 3 Paper

(4) B is

4

3

times as efficient as A.
∵ A completes

5

8

th work in 15 days.
∴Time taken by A in doing 1 work
=

15×8

5

=24days
∴ Time taken by B in doing whole work
=24×

3

4

=18days
∵B’s 1 day’s work =

1

18

∴B’s 10 days’ work
=

10

18

=

5

9

∴ Remaining work =1−

5

9

=

4

9