Multiple choice

A contractor undertakes to complete a road 360 m long in 120 days and employs 30 men for the work. After 60 days he finds that only 120 m length of the road has been made . How many more men should he emply so that the work many be complete in time ?

  1. 20

  2. 30

  3. 15

  4. 45
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Work done = 120m in 60 days by 30 men. Remaining work = 240m in 60 days. (M1*D1)/W1 = (M2*D2)/W2. (30*60)/120 = (M2*60)/240. M2 = 60. More men needed = 60 - 30 = 30.

AI explanation

Using the formula (M1 * D1) / W1 = (M2 * D2) / W2, we substitute the values (30 men * 60 days) / 120 m = (M * 60 days) / 240 m. Solving for M gives M = 60, which is the total number of men required for the remaining work. Therefore, he needs to employ 30 more men.

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