- A6 h
- B7.5 h
- C10 h
- D15 h
Step-by-Step Solution
Water needed L at L/h → 6 h. (7.5 h fills the whole tank.)
Answer: A) 6 h
Bhavna's hostel tank is filled by two pumps working at 1,200 and 800 litres per hour. The tank holds 15,000 litres and is one-fifth full. How long will the pumps take to fill it?
Competition practicePipes & Cisterns
Master this topic in 30 minutes a day.
Don't just memorise the answer — build a daily practice habit.
Practice 5 Similar Questions Free →All Pipes & Cisterns practice questions
More Pipes & Cisterns practice
Starting together on an empty tank, pipe P (fills it in 30 minutes) runs throughout,…The time pipe A takes to fill a tank is two-thirds of the time pipe B takes. Together…Three pipes have flows in the ratio 1 : 2 : 3. The largest pipe alone fills a tank in 8…A cistern is three-quarters full. Pipe A can fill the empty cistern in 12 minutes and…A full 7,200-litre tank has an inlet bringing 60 litres per minute and two outlets each…