You can put this solution on YOUR website! it takes 3 people 4 hours to paint a room
Find how many man-hrs to do the job: 3 * 4 = 12 man-hrs
:
how long will it take for 2 people to paint the same room
let h = no. of hrs to do the job with 2 people
2h = 12
h = 12/2
h = 6 hrs