A Worker agreeing to finish a work in 150 days, employed 75 men each
working 8 hours daily. After 90 days, only 2/7 of the work was completed.
Increasing the number of men by ________ each working now for 10 hours daily,
the work can be completed in time.

 Posted by Chvrsri on 3/22/2011 | Category: Aptitute Test Interview questions | Views: 4481 | Points: 40
Answer:



Answer is 150 men.

Explanation :

1 day work = 2/(7*90)
1 hour work=2/(7*90*8)
1 man work=2/(7*90*8*75)

The Remaing work 5/7 has to be completed in 60 days , because the total number of days allowed for the completion of the work is 150 days.

so we have ,

(2 * 10 * x * 60) / (7 * 90 * 8 * 75) = 5/7
where x is the number of men working after the 90th day.

We get x = 225

Since we have 75 men already,

Answer = 225- 75
It is enough to add only 150 men.


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