
aptitude - pipes and cisterns
Quiz by KAVIN K
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- Q1
Two pipes A & B can fill the tank in 12 hours and 36 hours respectively. If both the pipes are opened simultaneously, how much time will be required to fill the tank?
b. 9 hours
c. 12 hours
d. 15 hours
a. 6 hours
30s - Q2
Two pipes can fill a tank in 6 hours and 8 hours respectively while a third pipe empties the full tank in 12 hours. If all the three pipes operate simultaneously, in how much time will the tank be filled?
a. 7(1/2) hrs
c. 3 (2/7) hrs
d. 1(1/5) hrs
b. 4(4/5) hrs
30s - Q3
Two pipes can fill a tank in 10 and 14 minutes respectively and a waste pipe can empty 4 gallons per minute. If all the pipes working together can fill the tank in 6 minutes, what is the capacity of the tank?
b. 240 gallons
a. 120 gallons
c. 450 gallons
d. 840 gallons
30s - Q4
A booster pump can be used to fill as to empty the tank. The capacity of the tank is 1200 m3. The emptying capacity of the tank is 10 m3 per minute higher than its filling capacity and the pump requires 4 minutes lesser to vacant the tank than it requires to fill it. Calculate the filling capacity of the pump.
b. 50
d. 100
c. 75
a. 25
30s - Q5
An electric pump can fill a tank in 4 hours. Due to leakage in the tank, it took 4(1/2) hrs to fill the tank. If the tank is full, how much time will the leak take to empty the full tank?
d. 36 hrs
a. 8 hrs
b. 16 hrs
c. 21 hrs
30s - Q6
Two pipes fills a cistern in 15 hrs and 20 hrs respectively. The pipes are opened simultaneously and it is observed that it took 26 min more to fill the cistern because of leakage at the bottom. If the cistern is full, then in what time will the leak empty it?
b. 70 hrs
c. 180 hrs
d. 300 hrs
a. 35 hrs
30s - Q7
If two pipes function simultaneously, the reservoir will be filled in 24 hrs. One pipe fills the reservoir 20 hours faster than the other. How many hours does it take for the second pipe to fill the reservoir?
b. 30 hrs
a. 12 hrs
d. 60 hrs
c. 44 hrs
30s - Q8
Two pipes can fill a tank in 8 hrs & 6 hrs respectively. If they are opened on alternate hours and if pipe A gets opened first, then in how many hours, the tank will be full?
d. 14 hrs
b. 7 hrs
c. 8 hrs
a. 6 hrs
30s - Q9
It is observed that the pipe A can fill the tank in 15 hrs and the same tank is filled by pipe B in 20 hrs. The third pipe C can vacant the tank in 25 hrs. If all the pipes get opened initially and after 10 hrs, the pipe C is closed, then how long will it take to fill the tank?
d. 20 hrs
a. 3 hrs
b. 7 hrs
c. 12 hrs
30s - Q10
Two pipes A & B can fill a tank in 5 min & 10 min respectively. Both the pipes are opened together but after 2 min, pipe A is turned off. What is the total time required to fill the tank?
d. 20 min
b. 6 min
a. 4 min
c. 14 min
30s - Q11
Three pipes A, B and C can fill a tank in 6 hours together. All three pipes are opened for 2 hours, and then pipe C is closed. Remaining part of the tank is filled by pipes A and B in 7 hour. How much time will pipe C take to fill the empty tank alone?
a.10
b.12
d.16
c.14
30s - Q12
Two pipes fill a tank in 20 and 24 minutes respectively and a waste pipe can empty 3 gallons per minute. All the three pipes working together can fill the tank in 15 min. The capacity of the tank is?
d.180 gallons
B.100 gallons
a.60 gallons
c.120 gallons
30s - Q13
Two pipes can fill a small tank in 7 hr and 8 hr respectively. A leakage was found when two pipes are opened simultaneously and due to leakage it took 16 min more to fill it up. How much time the leakage will take to empty the full tank?
b.58 hour
c.50 hour
a,56 hour
d.112 hour
30s - Q14
Two pipes A and B can fill a tank in 24 minutes and 32 minutes respectively. If both the pipes are opened simultaneously, after how much time should B be closed so that the tank is full in 18 minutes?
d.6 mins
b.2 mins
a.4 mins
c.8 mins
30s - Q15
A large tanker can be filled by two pipes A and B in 60 minutes and 40 minutes respectively. How many minutes will it take to fill the tanker from empty state if B is used for half the time and A and B fill it together for the other half?
c.27.5 minutes
b.20 minutes
d.30 minutes
a.15 minutes
30s