A and B together can fill a tank in 12 mins, B and C together can fill the tank in 15 mins and C and A can fill a tank in 20 mins. In how much time will B take to fill the tank ?
1
10 min.
2
15 min.
3
20 min.
4
25 min.
A and B together can fill a tank in 12 mins, B and C together can fill the tank in 15 mins and C and A can fill a tank in 20 mins. In how much time will B take to fill the tank ?