BUSINESS ADMINISTRATION
BUSINESS MATHEMATICS
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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5 hours
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10 hours
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15 hours
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20 hours
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Detailed explanation-1: -Two pipes A and B can fill a tank in 20 and 16 hours respectively. Pipe B alone is kept open for 1/4 of time and both pipes are kept open for remaining time. In how many hours, the tank will be full? ⇒ x/16+3x/80 = 1⇒ x= 11=10 hours.
Detailed explanation-2: -Two pipes can separately fill the tank in 15hrs and 30hrs respectively. Both the pipe are opened and when the tank is 1/3 full a leak is developed due to which 1/3 water supplied by the pipe leaks out. What is the total time to fill the tank? Correct answer is option ‘C’.
Detailed explanation-3: -One pipe can fill a tank three times as fast as another pipe. If together the two pipes can fill the tank in 36 minutes, then the slower pipe alone will be able to fill the tank in: 81 min.
Detailed explanation-4: -Detailed Solution Then, pipes B will take x/2 and C will take x/6 hours respectively to fill the tank. ⇒ x = 72 hrs. B will take = 72/2 = 36 hours. ∴ Pipe B alone take 36 hours to fill the tank.