Seventy-five men are employed to lay down a railway line

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Seventy-five men are employed to lay down a railway line in 3 months. Due to certain emergency conditions, the work was to be finished in 18 days. How many more men should be employed to complete the work in the desired time ?

1. 300
2. 325
3. 350
4. 375

Correct Option: A

Using Rule 1,
M₁D₁ = M₂D₂
⇒ 75 × 90 = M₂ × 18

⇒ M₂ =	75 × 90	= 375
	18

7there4; Number of additional men
= 375 – 75 = 300