cfc198 wrote:

A contractor undertakes to do a job in 20 days so he employs 36 laborers. After 5 days he realizes that three-eleventh of the work is over. To finish the work exactly on time, how many more laborers does he need to employ or how many can he afford to fire?

A. Hire 4

B. Hire 32

C. Fire 4

D. Hire 32

E. Fire 16

One quick way to solve is-

25% days over, work done=27% approximately

==> needs to fire people, A,B,D re out

Now common sense says that out of C and E,C should be right because the gap between work needed to be done and number of days left is not too huge.

Therefore,C

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