Postal or Sorting Assistants Model Paper 3 With Solutions

Question : 19 of 100

Marks: +1, -0

A and B can together do a piece of work in 15 days. B alone can do it in 20 days. A alone can do it in

Solution:

(d) (A + B)’s 1 days’s work

= 1/15

B’s 1 day’s work

= 1/20

∴ A’s 1 day’s work

= [1/15-1/20]=1/60

So. A alone can do the work in 60 days.

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