`5` men can complete a job in 8 days. How many days will it take if 12 men do the job?

Explanation

`5` men can complete a job in `8` days.
So `5` men can work in `1` day =`1/8` of total work.
So, `1` men can work in one day =` 1/8 xx 1/5=1/40`.
Therefore `12` men can do in `1` day = `12 xx 1/40`.
So, total days required to complete the work is `40/12` days
`=10/3` days.