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Q:

If the speed of a boat in still water is 20 km/hr and the speed of the current is 5 km/hr, then the time taken by the boat to travel 100 km with the current is : 

  • 1
    4 hr
  • 2
    7 hr
  • 3
    2 hr
  • 4
    3 hr
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Answer : 1. "4 hr"

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