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Q. A person can row 7 1/2 km an hour in still water. Finds that it takes twice the time to row upstream than the time to row downstream. The speed of the stream is:

  • (A) 2 kmph
  • (B) 2.5 kmph
  • (C) 3 kmph
  • (D) 4 kmph
  • Correct Answer - Option(B)
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  • Filed under category Math
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