Question

A contractor employed 200 men to finish 5/6 of

total work in 10 days, due to rain the work was

stopped & 2/5 of work was also destroyed, after

rain only 150 men come on work. In how many

days the whole work will be completed.​

Answer 1

Answer:

Given 5/6 work is completed by 200 workers in 10 weeks

Therefore in 1 week they will be able to complete 5/60 = 1/12 of work.

So 1 man will be able to complete 1/2400 work in 1 week.

Now because of rain half of completed work is washed away.

Therefore completed work will be 5/6 x 1/2 = 5/12

Let the remaining work be p

Therefore p + 5/12 = 1

Or p = 1 – 5/12

Or p = 7/12

According to the question 140 men are available to complete the remaining work.

So work completed in 1 7/120 q = p

will be 1/2400 x 140 = 7/120

Now let q weeks are required to finish the work.

Then 7/120 q = p

       7/120 q = 7/12

        Or q = 120 / 12

       Or q = 10 weeks.

Therefore total time required to complete the work in 10 week will be

    10 + 4 + 10 = 24 weeks

Step-by-step explanation:

Answer 2

Answer:

Answer provided above......

Hope this helps you........