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

  1. 50
  2. 10 min.
  3. 20
  4. 80 min.
Anurag Mishra Professor Asked on 23rd January 2016 in Maths.
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  • 1 Answer(s)

    Answer:  (2) 10 min 

    Anurag Mishra Professor Answered on 23rd January 2016.
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