If it takes 4 men 6 hours to repair a road, how long will it take 3 men to do the job if they work at the same rate ?

8 Hours

Step-by-step explanation:

Let the the length of the road x

It takes 4 men 6 hours to repair a road and they work at the same rate.

So, each one will repair 0.25x

And the rate to repair the road will be 6 hour per 0.25x.

rate =

Now, if 3 men will do the job

each one of them will repair (1/3) x with the same previous rate

∴

So, The 3 men will do the job at 8 hours.

cross multiplying, we get :

⇒ (3) × (5) = (9) × (x)

⇒ 15 = 9x

2 1/2 feet

step-by-step explanation: