Time and Work Practice Test 2 with solutions

Question : 3 of 40

Marks: +1, -0

A and B can together finish a work 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 A alone can finish the job?

60 days
54 days
50 days
40 days

Validate

Solution:

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

{20}/{30}

2/3

Remaining part of work = 1 –

2/3

1/3

, which will be done by A alone in 20 days.
Hence, whole work will be done by A alone in 20 × 3 = 60 days.

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