CSC
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Numerical Ability
Pipes and Cistern
A pipe takes a hours to fill the tank. But because of a leakage it took 3 times of its original time. Find the time taken by the leakage to empty the tank
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- ans=90
pipe a can do a work 60 min.
lets leakage time is x;
then
1/60 -1/x=1/180
x=90 min(1 hr 30min); - 9 years agoHelpfull: Yes(9) No(0)
- 1 1/2 hrs.
Filling in 1 hr.=1 & if leakage/hr.=1/L, then 1- (1/L)=1/(1*3)=1/3, 1/L=2/3
So the time by leakage to empty the tank=3/2=1 1/2 or 1.5 hrs. - 9 years agoHelpfull: Yes(5) No(0)
- assume dat pipe takes 100 mins to fill the tank.(a=100) -> (1/100)th work done per minute
because of leakage it takes 3times of original time to fill the tank. -> 300mins
[1/100]*300 - [1/x]*300 = 1
by solving for x u can get it as 150 which is equal to (3/2)a - 9 years agoHelpfull: Yes(0) No(0)
- 1 1/2 hrs. (1 hr 30min)
Filling in 1 hr.=1 & if leakage/hr.=1/L, then 1- (1/L)=1/(1*3)=1/3, 1/L=2/3
So the time by leakage to empty the tank=3/2=1 1/2 or 1.5 hrs. - 8 years agoHelpfull: Yes(0) No(0)
- 60
3:1
60/4*3=75 min
1hr:15 min - 8 years agoHelpfull: Yes(0) No(0)
- (1*3)/ (1-3)= 1.5 hrs
- 6 years agoHelpfull: Yes(0) No(0)
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