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07 Jan 2020, 06:05
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A tank, which usually takes 5 hours to be filled, takes 6 hours to fill because of a leak. Find the time in which the leak can empty the tank if it is filled and the inlet pipe is shut.
A. 30 hours
B. 27.5 hours
C. 25 hours
D. 22.5 hours
E. 20 hours
A. 30 hours
B. 27.5 hours
C. 25 hours
D. 22.5 hours
E. 20 hours
07 Jan 2020, 06:34
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Assume Tank capacity: 120 L
- Usual time taken to fill the the tank: 5 hrs, also 120/5 = 24 L/hour.
- Time taken to fill the the tank with leak: 6 hrs, also 120/6 = 20 L/hour
- It means 24 - 20 = 4 L/hour is the flow of leakage.
- Now, time in which the leak can empty the tank if it is filled and the inlet pipe is shut?
=> 120/4 = 30 Hrs
IMO Option A
- Usual time taken to fill the the tank: 5 hrs, also 120/5 = 24 L/hour.
- Time taken to fill the the tank with leak: 6 hrs, also 120/6 = 20 L/hour
- It means 24 - 20 = 4 L/hour is the flow of leakage.
- Now, time in which the leak can empty the tank if it is filled and the inlet pipe is shut?
=> 120/4 = 30 Hrs
IMO Option A
08 Jan 2020, 22:09
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Bunuel
A tank, which usually takes 5 hours to be filled, takes 6 hours to fill because of a leak. Find the time in which the leak can empty the tank if it is filled and the inlet pipe is shut.
A. 30 hours
B. 27.5 hours
C. 25 hours
D. 22.5 hours
E. 20 hours
A. 30 hours
B. 27.5 hours
C. 25 hours
D. 22.5 hours
E. 20 hours
in 6 hours leak drains 1/5 of tank
5*6=30 hours
A
