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Q: The speed of a sailor in still water is x km/hr. and the speed of stream is y km/hr. If a person moves a certain distance opposite the stream, and then returns the same distance in the direction of the stream, find his average speed during the journey.
  • A.
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  • B.
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  • C.
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  • D.
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Correct Answer: Option D -
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Explanations:

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