- A10 hours
- B14 hours
- C12 hours
- D18 hours
Step-by-Step Solution
After 2 h: left. Net emptying h more. Total 14 hours.
Answer: B) 14 hours
An outlet empties a tank in 6 hours. It is opened on a full tank; after 2 hours an inlet that fills the tank in 9 hours is also opened. How long from the start until the tank is empty?
Class 8Leaks and Changing PipesDirect and Inverse Proportions
Master this chapter in 30 minutes a day.
Don't just memorise the answer — build a daily practice habit.
Practice 5 Similar Questions Free →All Leaks and Changing Pipes practice questions
More Class 8 Leaks and Changing Pipes practice
A pipe fills a cistern in 15 minutes. After 5 minutes a leak starts, and the cistern is…A tank has a tap that fills it in 4 hours and a drain that empties it in 5 hours. If the…Pipes A and B fill a tank in 36 and 45 minutes. Pipe C empties it in 30 minutes. A and B…A small leak alone empties a full tank in 8 hours. A pipe fills 6 litres a minute into…A cistern takes 2 hours to fill with the tap on full and 3 hours with the tap half open.…