Math Problems and Logic Puzzles

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Multiple Choice

A boat goes 45 km. up stream in 9 hours and a distance of 49 km. downstream in 7 hours. The speed of the boat in still water is:

  1. 5 km/hr
  2. 6 km/hr
  3. 5.5 km/hr
  4. 6.5 km/hr
  5. 7 km/hr
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