Latest TCS Aptitude Question SOLUTION: There is a tank,and two pipes A and B.A can fill the tank in 25 minutes and B can empty the tank in 20 minutes.If both pipes are opened at same time.how much time required the taan

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(#M40012441) TCS Programming question pipes and cisterns Keep an EYE

There is a tank,and two pipes A and B.A can fill the tank in 25 minutes and B can empty the tank in 20 minutes.If both pipes are opened at same time.how much time required the taank can fill?

Asked In TCS balu (12 years ago)

Unsolved Read Solution (13)

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Read Solution (13) :

sunil pandey  (12 years ago)

tank will never be filled. bcz here pipe B is empting tank more faster than pipe A

Is this solution Helpfull? Yes (46) | No (7)  

sathish kumar  (12 years ago)

the tank will never get filled because ans is -100

Is this solution Helpfull? Yes (15) | No (1)  

snehil  (12 years ago)

1/25 -1/20 will be -ev so tank will never fill

Is this solution Helpfull? Yes (5) | No   

pranay  (12 years ago)

tank ill be never be filled.
1/25-1/20="-ve"

Is this solution Helpfull? Yes (4) | No   

Sandeep singh  (12 years ago)

tank will never be filled

Is this solution Helpfull? Yes (4) | No   

balu  (12 years ago)

the tank never filled is correct answer(B empty can take less time than fill pipeA)both are opened at same time so the tank never filled

Is this solution Helpfull? Yes (4) | No   

srujana  (12 years ago)

tank never fill bcz b is faster than a

Is this solution Helpfull? Yes (3) | No   

Krishna Nevtiya  (12 years ago)

work done by both A & B=L.c.m of 25 and 20 =100
sothat,Rate of A=100/25=4
Rate of B=100/20=5
As A is filling the tank and B is Emptying simultaneously then to fill the tank workdone will be the as 100 and rate=rate of A - rate of B=4-5=-1=1(take +ve)
sothat time required to fill the tank=100/1=100min ans

Is this solution Helpfull? Yes (3) | No (11)  

vivek garg  (12 years ago)

i think 100/9

Is this solution Helpfull? Yes (1) | No (17)  

Sahil Motwani  (12 years ago)

The tank will never be filled as A fills the tank in 25 mins whereas Bempties it in 20 mins so it can never be filled. i think A fills tank in 20 mins and B empties it in 25 mins so answer will be 100 mins. the question is asked wrong i suppose

Is this solution Helpfull? Yes (1) | No (3)  

MIR FIROJ ALI  (12 years ago)

tank will nt ever been filled

Is this solution Helpfull? Yes (1) | No (2)  

parthiban M  (5 years ago)

it is impossible to fill the tank .unless closing the pipe B.because rate of flow of the pipe B is more then the pipe A.

Is this solution Helpfull? Yes | No   

RM ARUNACHALAM  (5 years ago)

In one minute :

a fills 1/25 of the tank.

b empties 1/20 of the tank.

In one minute the amount of water in the tank is :

1/25 - 1/20 = - 1/100 of the tank

This gives - 100 minutes

This means that every minute we will have a negative amount meaning no water in the tank.

Therefore the tank can never get full when the two taps are opened.

In essence tap B is emptying the tank faster than tap A is filling the tank.

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