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Q:

The speed of a boat in still water 11 km/hr. It can go 12 km upstream and return downstream to the engine point in 2hr 45min. What is the speed of stream?

  • 1
    3 km/hr.
  • 2
    2 km/hr
  • 3
    5 km/hr
  • 4
    4 km/hr
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Answer : 3. "5 km/hr"

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