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1405

Q:

A pipe of diameter ‘d’ can drain a certain water tank in 40 minutes. The time taken by a pipe of diameter ‘2d’ for doing the same job in: 

  • 1
    5 minutes
  • 2
    10 minutes
  • 3
    20 minutes
  • 4
    80 minutes
  • Show Answer
  • Workspace

Answer : 2. "10 minutes "

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