A contract is to be completed in 75 days and 187 men are to work 15 hours per day. After 65 days, 3/5 of the work is completed. How many additional men may be employed, so that the work may be completed in time each man now working 17 hours per day?
Show answer & explanation
Correct answer: C
Explanation
The correct answer is Option 3 i.e. 528
Let 'x' number of males required to complete the remaining work.
⇒ M1D1H1/W1 = M2D2H2/W2
⇒ (187 × 65 × 15)/(3/5) = (x × 10 × 17)/(2/5)
⇒ x = 13 × 55
⇒ x = 715
Extra men = 715 - 187
⇒ 528 men