Question

4. A and B can do a job in 72 days. B and C can do the same job
in 120 days, and A and C can do the same job in 90 days. In
how many days will all the three take to complete the job?
a. 80 days
b. 100 days
c. 60 days
d. 150 days​

Answer 1

Answer:

According to me the answer is

C. 60 days

Make me brainlieat

Answer 2

Answer:

I think that it must be 60