Time and Work Practice Test 2 with solutions

Question : 1 of 40

Marks: +1, -0

A contractor undertook to complete a project in 90 days and employed 60 men on it. After 60 days, he found that 3/4 of the work has already been completed. How many men can he discharge so that
the project may be completed exactly on time?

Validate

Solution:

After 60 days remaining work = 1

- 3/4

1/4

In 60 days

3/4

work has been done by 60 men
In 30 days

1/4

work will be done by 60 ×

4/3 × 1/4 × {60}/{30}

= 40 men.
Hence, required number of men = 60 – 40 = 20 (which are to be discharged).

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