Question
Pipe ‘A’ can fill a tank in 20 hours while pipe
‘B’ can empty it in 30 hours. They were operated on alternate hours starting with pipe ‘A’. Find the percentage of tank filled this way in 57 hours.Solution
Given: Pipe A fills in 20 hours → Rate = 1/20 Pipe B empties in 30 hours → Rate = 1/30 Net work in 2 hours = 
57 hours = 28 cycles + 1 hour.
Work in 28 cycles = 
Work by A in 1 hour = 1/20
Total filled = 
Percentage filled = 
The state flower of Haryana is ______.
Who is the author of the book “New Wealth of Nations”?
The capital of Kenya is -
What is NABARD’s full form?
A sum of Rs. 2000 was invested at a rate of 10% interest. The compound interest was calculated at an interval of every six months. What will be the net ...
Where was the ‘Rapid Trident’ joint military exercise among Ukraine, US and NATO (North Atlantic Treaty Organization) nations held?
Which initiative was highlighted at the 4th RE-Invest Summit to showcase investment opportunities in green energy?
Which ministry is responsible for the SVAMITVA scheme in India?
Identify the founding members of the Swaraj Party. Which of these leaders was NOT among them?
Select the incorrect statement based on the data in the Economic Survey 2022-23 -
Relevant for Exams:
