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Q:

The ratio between speed of boat in down stream and speed of stream is 9 : 1. If the speed of current is 3 km/hr, then find the distance travelled in upstream in 5 hours. 

  • 1
    105 km
  • 2
    120 km
  • 3
    110 km
  • 4
    can't be determined
  • 5
    None of these
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Answer : 1. "105 km "

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