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Two pipes P and Q can fill a tank in 3 hrs. and 4 hrs. respectively. If both pipes are opened together, then after what time, should P be closed so that the tank is full in 2 hrs. from the start
  • a)
    1 hr. 10 min
  • b)
    1 hr. 15 min
  • c)
    1 hr. 20 min
  • d)
    1 hr. 30 min
Correct answer is option 'D'. Can you explain this answer?
Verified Answer
Two pipes P and Q can fill a tank in 3 hrs. and 4 hrs. respectively. I...
Given,
Pipe P 1 hour's work = 1/3
Pipe Q 1 hour’s work = 1/4
Pipe Q is opened for 2 hours then = 2 × 1/4 = 1/2
Remaining part of tank remain unfilled = 1 - 1/2 = 1/2
1/2 part will be filled by P in = (1/2) / (1/3) = 1.5
Pipe P should be closed after 1 hr 30 min.
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Two pipes P and Q can fill a tank in 3 hrs. and 4 hrs. respectively. If both pipes are opened together, then after what time, should P be closed so that the tank is full in 2 hrs. from the starta)1 hr. 10 minb)1 hr. 15 minc)1 hr. 20 mind)1 hr. 30 minCorrect answer is option 'D'. Can you explain this answer?
Question Description
Two pipes P and Q can fill a tank in 3 hrs. and 4 hrs. respectively. If both pipes are opened together, then after what time, should P be closed so that the tank is full in 2 hrs. from the starta)1 hr. 10 minb)1 hr. 15 minc)1 hr. 20 mind)1 hr. 30 minCorrect answer is option 'D'. Can you explain this answer? for Railways 2024 is part of Railways preparation. The Question and answers have been prepared according to the Railways exam syllabus. Information about Two pipes P and Q can fill a tank in 3 hrs. and 4 hrs. respectively. If both pipes are opened together, then after what time, should P be closed so that the tank is full in 2 hrs. from the starta)1 hr. 10 minb)1 hr. 15 minc)1 hr. 20 mind)1 hr. 30 minCorrect answer is option 'D'. Can you explain this answer? covers all topics & solutions for Railways 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for Two pipes P and Q can fill a tank in 3 hrs. and 4 hrs. respectively. If both pipes are opened together, then after what time, should P be closed so that the tank is full in 2 hrs. from the starta)1 hr. 10 minb)1 hr. 15 minc)1 hr. 20 mind)1 hr. 30 minCorrect answer is option 'D'. Can you explain this answer?.
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