It takes Henry 2 hours to paint a room. It takes Louisa three hours to paint the same room. If they work together, how long will it take them to paint the room?

amount of time it'll take Henry and Louisa = 6/5 hours

Step-by-step explanation:

Number of hours it takes Henry = 2hrs

Henry's one hour work = 1/2

Number of hours it takes Louisa = 3 hrs

Louisa's one hour work = 1/3

Hence Louisa and Henry one hour work = 1/2+1/3 = 5/6

Hence amount of time it'll take Henry and Louisa = 6/5 hours