A contractor undertakes to built a walls in 50 days. He employs 70 peoples for the same. However after 25 days he finds that only 40% of the work is complete. How many more man need to be employed to complete the work in time?  Choose the correct choice.
A) 105	B) 30	C) 35	D) 20	E) None of these
70 men complete 0.4 work in 25 days.   105pplying the work rule, m1 × d1 × w2 = m2 × d2 × w1   we have,   70 × 25 × 0.6 = m2 × 25 × 0.4   or m2 = 70×25×0.6/25×0.4 = 105 men   105nswer105
<result>A</result>
A contractor undertakes to built a walls in 50 days. He employs 70 peoples for the same. However after 25 days he finds that only 40% of the work is complete. How many more man need to be employed to complete the work in time?