Question

It takes 8 men to complete a job in 20 hours. How many hours will 5 men take

Answer 1

Well first we find out how many hours 1 man takes

So we say

Unknown. ×given

Known

20 divided

8. × 1

=2,5 hr/1 man

Then we multiple the wanted man by the single hour man

5 ×2,5

=12,5 hrs

Hope this answer helps