Question

A can do a job in 15 days and b can do the same job in 12 days in how many days will the job be completed if both work together

Answer 1

Answer:

20/3 days

Step-by-step explanation:

In one day A can do 1/15 of the job

In one day B can do 1/12 of the job

In one day both of them can do 1/12+1/15=3/20 of the job

So it takes 1 : (3/20) = 20/3 days for both to do the job

idk i might be wrong tho