Question

A contractor has to build a wall in 50 days. He employs 50 men for the same. However, after 25 days the work is only 40% complete. How many more men need to be employed to complete the work 10 days before time?

Answer 1

Answer:

75 men

Step-by-step explanation:

As 40% work by 50 men is completed in 25 days,

The whole work can be completed in 25*100/40=125/2 days

So 1 man, 1 day work=2/(125*50)=1/3125

50 men,25 days work=25*2/125=2/5,

The remaining work(=3/5) is to be completed by 50 men+ 'x' men in next 15 days (Total 40 days),

So 15 [ (2/125) + (x*1/3125) ] = 3/5

750+15x=1875,

x=75

hope it helps u......

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