Question

All the members of a construction crew work at the same pace. six of them working together are able to pour foundation in 22 hours.

how many hours will this job take if the number of workers increased by a factor of 4?

Answer 1

It will take additional 4 workers to complete the work in 13.2 hours

Explanation:

Given:

6 men complete the work in 22 hours

we need to find number of hours to complete the work when workers are increase by 4 i.e with 10 workers

Solution:

6 men complete the work in 22 hours

hours taken for 1 men to complete the work =
`22*6`

∴ hours taken by 10 men to complete the work =
`(22*6)/(10)=13.2 \ hours`