Question

210 men working 12 hours a day can finish a job in 18 days.how many men are required to finish the job in 20 days working 14 hours a day?

Answer 1

The required number of men is 162.

• Given data :

If 210 men work for 12 hours per day they can finish the total job in 18 days.

• Now,we have to calculate the number of men who can complete the total job by working 14 hours per day for 20 days.

• So,

Working 12 hours per day in 18 days the number of men needed is = 210

Working for 1 hour per day in 18 days the number of men needed is = 210× 12 [Inverse relationship]

Working for 1 hour per day in 1 day the number of men needed is = 210×12×18 [ Inverse relationship]

Working for 14 hours per day in 1 day the number of men needed is = (210×12×18)/14 [ Inverse relationship]

Working for 14 hours per day in 20 days the number of men needed is = (210×12×18)/14×20 = 162 men

So,total 162 men is needed to complete the job in the given time period. (Answer)