A cistern is normally filled with eater in 10 hours but takes 5 hours longer to fill because of a leak in its bottom . If the cistern is full, the leak will empty the cistern in -

A 20 hours
B 30 hours
C 40 hours
D 50 hours.

Correct Answer: 30 hours

Work done by the leak in one hour 110 - 115 = 3 - 230 = 130The leak will empty the cistern  = 30 hours
Bissoy MCQ
#গণিত #Combined Bank (সমন্বিত ব্যাংক) #জনতা ও রূপালী ব্যাংক- অফিসার ১৩.১২.২০১৯

Related Questions

A cistern is normally filled in 8 hours but takes two hours longer to fill because of a leak in its bottoms. If the cistern is full, the leak will empty it in ?
A 28 hrs
B 20 hrs
C 40 hrs
D 36 hrs
An empty fuel tank of a car was filled with A type petrol. When the tank was half-empty, it was filled with B type petrol. Again when the tank was half-empty, it was filled with A type petrol. When the tank was half-empty again, it was filled with B type petrol. What is the percentage of A type petrol at present in the tank?
A 33.5%
B 37.5%
C 40%
D 50%
An empty fuel tank of a car was filled with A type petrol. When the tank was half-empty, it was filled with B type petrol. Again when the tank was half-empty, it was filled with A type petrol. When the tank was half-empty again, it was filled with B type petrol. What is the percentage of A type petrol at present in the tank ?
A 33.5%
B 37.5%
C 40%
D 50%
It takes 5 hours to fill a container using machine A. The same container can be filled using machine B in 10 hours. When the container is full, Machine C can fully empty the container in 20 hours. If all three machines start working on the same empty container how long will it take for the container to be completely filled,
A 12 hour
B 4 hour
C 2 hour
D 15 hour
Two pipes A and B together can fill a cistern in 4 hours. Had they been opened separately, then B would have taken 6 hours more than A to fill the cistern. How much time will be taken by A to fill the cistern separately?
A 1 hour
B 2 hours
C 6 hours
D 8 hours
Pipe A can fill an empty cistern in 4 hours while along with Pipe B it can fill it up in 3 hours. Only Pipe A is turned on for an hour after which Pipe B is also turned on. How much total time will it take to fill up the cistern?
A 3 hrs 20 min
B 3 hrs 25 min
C 3 hrs 15 min
D 3 hrs
Pipe P can fill and empty tank in 4 hours but pipe Q can completely empty the same tank in 8 hours. But the pipes were opened alternately after every two hours starting with pipe P then in how many hours, the tank was completely filled ?
A 6 hours
B 5 hours
C 10 hours
D 12 hours
A pump can fill a tank with water in 2 hours. Because of a leak, it took 2 1/3 hours to fill the tank. The leak can drain all the water of the tank what time ?
A 4 1/3 hrs
B 7 hrs
C 8 hrs
D 14 hrs
A pump can fill with water in 2 hours. Because of a leak, it took 213 hours to fill the bank . The leak can drain all water of the tank in:
A 413hrs.
B 7 hrs.
C 8 hrs
D 14 hrs.
A pump can fill a tank with water in 2 hours . Because of a leak , it took 213 hours to fill the tank.The leak can drain all the water of the tank in -
A 4(13) hours
B 14 hours
C 7 hours
D 8 hours

Next steps