A can do 1/3 part of a work in 10 days. B can do 1/5 part of the work in 6 days. In how many days can A and B together do the work?
1
15 days
2
30 days
3
20 days
4
25 days
A can do 1/3 part of a work in 10 days. B can do 1/5 part of the work in 6 days. In how many days can A and B together do the work?