SSC CHSL Model Paper 6

Question : 74 of 100

Marks: +1, -0

A and B can together finish a job in 30 days. They worked together for 20 days and then B left. After another 20 days, A finished the remaining work. In how many days can A finish the work alone?

Validate

Solution:

(A + B)'s 20 day's work =

(1/30×20)=2/3

Remaining work =

(1-2/3)=1/2

Now,

1/3

work is done by A in 20 days.
Therefore, the whole work will be done by A in (20 × 3) = 60 days.

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