If it takes Sahel 6 days to paint the apartments of a building and it takes Kamal 8 days to do the same job, how long would it take to do the job if both painters worked together simultaneously?

If it takes Sahel 6 days to paint the apartments of a building and it takes Kamal 8 days to do the same job, how long would it take to do the job if both painters worked together simultaneously?

A 24/7 days

B 18/7 days

C 327 days

D 48/7

Solution

Correct Answer: Option A

Both work in 1 days,

1/6+1/8=7/24

7/24 part can be done in 1 days

1 part can be done in 7/24 days