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Two pipes P and Q can fill the tank alone in 120 and 80 hours respectively. If they are opened together, then in how many hours will the tank be filled?
  • a)
    24
  • b)
    48
  • c)
    100
  • d)
    120
Correct answer is option 'B'. Can you explain this answer?
Verified Answer
Two pipesPandQcan fill the tank alone in120and80hours respectively. If...
Given,
Pipe P can fill the tank = 1/120 hours
Pipe Q can fill the tank = 1/80 hours
If both pipes are opened together, then the tank will be filled in:

= 20/960
= 1/48
∴ If both pipes are opened together, then the tank will be filled in 48 hours.
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Two pipesPandQcan fill the tank alone in120and80hours respectively. If they are opened together, then in how many hours will the tank be filled?a)24b)48c)100d)120Correct answer is option 'B'. Can you explain this answer?
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