Question

If 30 man can repair a road in 12 days than how long will it take 24 men to repair the same road?

Answer 1

Answer:

15 days

Step-by-step explanation:

The number of men is inversely proportional to the time taken to work.

  x ∝ $\frac{1}{y}$

⇒ xy is constant.

Let the number of men be x and the time taken be y.

⇒ $x_{1} y_{1} \ = \ x_{2} y_{2}$

⇒ 30*12 = 24*$y_{2}$

⇒ $y_{2}$ = $\frac{30 * 12}{24} \ = \ \frac{30}{2} \ = \ 15 \ days$

Answer 2

Answer:

15 days

Step-by-step explanation:

Time taken by 30 men to repair the road = 12days

:. Time taken by 1 man to repair the road = (30x12)days

Time taken by 24 men to repair the road = {(30x12)/ 24} days = 15 days

Therefore, time taken by 24 men will be 15 days.