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Q. Speed of a boat in still water is 7 km/hr and speed of the stream is 1.5 km/hr . How much time will it take to move up is stream of a distance 7.7 km?

  • (A) 75 minutes
  • (B) 84 minutes
  • (C) 72 minutes
  • (D) none of these
  • Correct Answer - Option(B)
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