Q. Pipe A fills a tank in 5 hours and pipe B empties it in 10 hours. If both are opened together, how long will it take to fill the tank?
✅ Correct Answer: (B)
10 hours
Explanation: Net rate = 1/5 − 1/10 = 1/10.
Explanation by: Kanak Sharma
Net rate = 1/5 − 1/10 = 1/10.