Pipe A can fill the tank in 10 hours and pipe B can empty the tank in 20 hours. Tank is already 2/5th filled. If both pipes opened simultaneously, then remaining tank will get filled in -
1
17 hours
2
12 hours
3
15 hours
4
20 hours
Pipe A can fill the tank in 10 hours and pipe B can empty the tank in 20 hours. Tank is already 2/5th filled. If both pipes opened simultaneously, then remaining tank will get filled in -