Find Out the Ratio Average Speed and Round Trip in Still Water. If

A boat has a speed of 20 km/hour in still water. In a stream that has a current of 5 km/hour, it travels a certain distance downstream and returns. The ratio of average speed for the round trip to the speed in still water is

  1. 15:16
  2. 4:1
  3. 4:15
  4. None of the above
Monis Rasool Professor Asked on 10th November 2015 in Maths.
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  • 1 Answer(s)

    Answer: (2) 4: 1

    Anurag Mishra Professor Answered on 10th November 2015.
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