Latest tcs Aptitude Question SOLUTION: . If a pipe can fill the tank within 6hrs.But due to leak it takes 30 min more.Now the tank is full then how much time will it take to empty the tank throught the leak.? a)78 b)56 c)66 d)59

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(#M40000540) TCS aptitude question Keep an EYE

. If a pipe can fill the tank within 6hrs.But due to leak it takes 30 min more.Now the tank is full then how much time will it take to empty the tank throught the leak.?
a)78 b)56 c)66 d)59

Asked In tcs Submited By-- Karthik (2 year ago)

Puzzle Status: Solved     By »» mukesh ranjan mallick

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mukesh ranjan mallick  (2 year ago)

78 hour

Let capacity be 6litres

then pipe takes 1litre/hour

pipe/leak = 6/6.5 litre/hour(as they are inveresly proplational)

so leak = 1/13 litre per hour

for 6 litres it will take 13*6 = 78 hour

Is this solution Helpfull? Yes (50) | No (18)  

YadeeshKumar  (2 year ago)

ans a)78

Is this solution Helpfull? Yes (9) | No (14)  

DIPIN  (2 year ago)

78

Is this solution Helpfull? Yes (8) | No (15)  

varun singh  (9 Month ago)

let the flow of pipe is 1 lit/hr
so in 6 hrs 6 lites water is filled which is the capacity of tank(6 lit.)
it takes 0.5 hrs extra for leak.
which means water is leaking at the rate 0.5 liter per 6.5 hrs (because in 6 hrs tank without leak will fill 6 lit of water and if leaking it will take 6.5 hrs so extra water filled in 0.5 hrs is half liter which is the compensation of leaking in 6.5 hrs)
so 0.5 liters in 6.5 hrs leaking time required for 1 liter to leak is 13
therefore time required for 12 liters = 6.5*12=78[answer.]

Is this solution Helpfull? Yes (7) | No (2)  

Srivastav Reddy  (8 Month ago)

there's a formula:
time to leak completely = (-6.5 * 6)/(6.5-6)

Is this solution Helpfull? Yes | No (2)  

(#M40002338) TCS MATHS PUZZLE Keep an EYE

If a pipe can fill the tank within 6hrs.But due to leak it takes 30 min more. Now the tank is full then how much time will it take to empty the tank throught the leak?
a) 78 b) 56 c) 66 d) 59

Asked In tcs Submited By-- UN (1 year ago)

Puzzle Status: Unsolved

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varun singh  (9 Month ago)

let the flow of pipe is 1 lit/hr
so in 6 hrs 6 lites water is filled which is the capacity of tank(6 lit.)
it takes 0.5 hrs extra for leak.
which means water is leaking at the rate 0.5 liter per 6.5 hrs (because in 6 hrs tank without leak will fill 6 lit of water and if leaking it will take 6.5 hrs so extra water filled in 0.5 hrs is half liter which is the compensation of leaking in 6.5 hrs)
so 0.5 liters in 6.5 hrs leaking time required for 1 liter to leak is 13
therefore time required for 6 liters = 6*13=78[answer.]

Is this solution Helpfull? Yes (25) | No (3)  

P.K.DHARMA  (1 year ago)

78 IS THE ANSWER

Is this solution Helpfull? Yes (12) | No (10)  

varun singh  (9 Month ago)

let the flow of pipe is 1 lit/hr
so in 6 hrs 6 lites water is filled which is the capacity of tank(6 lit.)
it takes 0.5 hrs extra for leak.
which means water is leaking at the rate 0.5 liter per 6.5 hrs (because in 6 hrs tank without leak will fill 6 lit of water and if leaking it will take 6.5 hrs so extra water filled in 0.5 hrs is half liter which is the compensation of leaking in 6.5 hrs)
so 0.5 liters in 6.5 hrs leaking time required for 1 liter to leak is 13
therefore time required for 12 liters = 6.5*12=78[answer.]

Is this solution Helpfull? Yes (4) | No   

JAYA  (7 Month ago)

here the pipe can fill one part in 1/ 6mins and the other piper can empty it in 30 more mins.. so 6hrs+30 mins will give u 2/13... so 1/6-1/(2/13) = 1/6-2/13 taking lcm we get (13-12)/78.. so ans is 78...

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sushobhan bhaumik  (1 year ago)

78....the answer

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

Anshuman  (9 Month ago)

78 is answer

Is this solution Helpfull? Yes (1) | No   

Abhishek Jain  (7 Month ago)

early pipe takes 6hrs to fill the tank
but due to leakage it takes 13/2hrs
that means pipe will work for 13/2hrs with 1/6 efficiency.
and leakage pipe will also work for 13/2hrs wit -ve efficiency.
so...
(1/6)(13/2)-n(13/2)=1
by solving this we get n=1/78
by inversing this we get the ans i.e., 78

Is this solution Helpfull? Yes | No (1)  

(#M40002504) KNOW THE A MATHS PUZZLE TCS Keep an EYE

. If a pipe can fill the tank within 6hrs.But due to leak it takes 30 min more. Now the tank is full then how much time will it take to empty the tank throught the leak

Asked In Know the answer Submited By-- gopi (1 year ago)

Puzzle Status: Unsolved

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kaykash  (1 year ago)

1/6+1/t=1/6.5
thn t=-78 but for outflow - is neglected

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bhargav  (1 year ago)

30min of water inflow = 6.5hrs of water outflow

6hrs of water inflow = 6.5*12=78hrs

ans=78hrs

Is this solution Helpfull? Yes (11) | No (5)  

surya sree  (1 year ago)

78 hrs ans
by A (pipe) time ---------- 360 mins
in one min by A = 1/360
now by A (pipe) by B (leak) time-------390
by (A+ B) in one min = 1/390
by (B) leak = 1/360 - 1/390=( 390- 360)/360*390 =30/360*390 total time to
empty the tank= 360x390/30x60 = 78 hours

Is this solution Helpfull? Yes (9) | No (1)  

Srivastav Reddy  (8 Month ago)

there's a formula:
time to leak completely = (-6.5 * 6)/(6.5-6)

Is this solution Helpfull? Yes (1) | No