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Question

59.3 pumps, working 8 hours a day, can empty a tank in 2 days. How many hours a day must 4 pumps work to empty the tank in 1 day?


  1. (a) 9                                         

  2. (c) 11                                     
  3.    (d) 12
  4. (b) 10


Solution

The correct option is C    (d) 12

Ans 59 d

 

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