| |
GeekInterview.com > Placement Papers > Infosys > Aptitude
| Print | |
Question: Time and Work
Answer: A pipe can fill a tank in 3 hours due to leakage it takes 3.5 hours to fill the same tank then how many hours will the leakage can empty the tank |
| December 12, 2008 08:21:45 |
#3 |
| tttreskarthik |
Member Since: December 2008 Total Comments: 1 |
RE: Time and Work
|
consider a tank with 1 litre(or keep some quantity as u wish) of capacity.
now to fill 1 litre it takes 3 hrs(180 mins). if the tank has a hole then it takes 3 1/2 hrs(210 mins) but remember it does not hav a quantity of 1 litre bcoz of hole(as some more water is wasted due to leakage). so (1 litre + x ).
In 1 min, the ideal tank gets filled up with 1/180 litre.
In 1min, the tank with hole gets filled with (1+x)/210 litre.
now our aim is to find x litres due to leakage.
therefore, x litre is leaked in 3 1/2 hrs.
(1/210)+(x/210)-(1/180)= 1min - 1min=0
(1/210)-(1/180)= -(x/210)
after solving, x=1/6
x=1/6 litre is leaked in 3 1/2 hrs.
then, 1 litre=3 1/2 * 6= 21 hrs
|
| |
Back To Question | |
