Question

Question 68

A contractor undertook a contract to complete a part of a stadium in 9 months with a team of 560 persons. Later on, it was required to complete the job in 5 months. How many extra persons should he employ to complete the work?

Answer 1

Given, a part of the stadium can completed by 560 persons in 9 months.
Hence, in 1 month, the work can be completed by $9\times 560=5040$ persons.

So, in 5 months, the work can be completed by $\frac{5040}{5}=1008$ persons.

Now, number of extra persons required to complete the work in 5 months =1008-560 = 448