218 questions asked across 4 exam years, newest first
What is the height (in m) of a conical water tank having radius of 70 m and volume of 46,200 m³? (Take π = 22/7)
Answer: D
A pipe can fill an empty tank in 5 minutes, and another pipe can empty it in 6 minutes. If both pipes are opened simultaneously, how long will it take to fill the tank?
Answer: D
Two pipes P and Q can fill a tank in 36 minutes and 45 minutes, respectively. If both pipes are opened together, the time taken to fill the tank is:
Answer: C
Two pipes, A and B, can fill a tank in 10 minutes and 20 minutes, respectively. The pipe C can empty the tank in 30 minutes. All the three pipes are opened at a time in the beginning. However, pipe C is closed 2 minutes before the tank is filled. In what time, will the tank be full (in minutes)?
Answer: B
Two pipes A and B can fill a tank in 48 minutes and 66 minutes, respectively. If both the pipes are opened simultaneously, then after how many minutes should pipe B be closed so that the tank gets filled in 32 minutes?
Answer: A
Two pipes A and B can fill a tank in 1⅓ hours and 2 hours, respectively. If both the pipes are opened simultaneously, then in how much time will the tank be filled?
Answer: C
There are two pipes to fill a tank. Together, they can fill the tank in 15 minutes. If one pipe can fill the tank in one and a half times as fast as the other, the faster pipe alone can fill the tank in:
Answer: C
Pipe A usually fills a tank in 6 hours. But due to a leak at the bottom of the tank, it takes extra 2 hours to fill the tank. If the tank is full, then how much time will it take to get emptied due to the leak?
Answer: C
Three pipes P, Q, and R can fill a cistern in 40 minutes, 80 minutes, and 120 minutes, respectively. Initially, all the pipes are opened. After how much time (in minutes) should the pipes Q and R be turned off so that the cistern will be completely filled in just half an hour?
Answer: A
Pipe L can fill a pool in 30 hours and pipe M in 45 hours. If both the pipes are opened in an empty pool, how much time will they take to fill it?
Answer: B
Pipes P and Q can completely fill a water tank in 10 hours and 15 hours, respectively. A pipe R can empty a tank filled completely with water in 12 hours. Initially, the tank is empty, and only pipes P and Q are opened at 6 a.m., and pipe R is also opened at 9 a.m. By what time will the tank be completely filled?
Answer: A
A pipe can fill an overhead tank in 12 hours. But due to a leak at the bottom, it is filled in 18 hours. If the tank is full, how much time will the leak take to empty it?
Answer: A
