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Q:

If the speed of the boat in still water is 20 km / h and the speed of the stream is 5 km / h, then how long will it take for the ferry to travel 100 km with the speed of the stream?

  • 1
    5 hours
  • 2
    4 hours
  • 3
    3 hours
  • 4
    8 hours
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Answer : 2. "4 hours"

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