A has done 1/2 of the job in 20 days. B completes the rest of the job in 30 days. In how many days can they together do the job?
1
25 days
2
30 days
3
24 days
4
35 days
A has done 1/2 of the job in 20 days. B completes the rest of the job in 30 days. In how many days can they together do the job?