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      Question

      The speed of a boat in still water is 8 km/hr, and the

      speed of the current is 3 km/hr. If the boat takes a total of 10 hours to travel β€˜x’ km both upstream and downstream, find the aproximate value of β€˜x’.
      A 68.25 Correct Answer Incorrect Answer
      B 45.25 Correct Answer Incorrect Answer
      C 33.50 Correct Answer Incorrect Answer
      D 34.4 Correct Answer Incorrect Answer

      Solution

      ATQ,


      Downstream speed = 8+3=11 km/hr


      Upstream speed = 8βˆ’3=5 km/hr

      Image

      Taking LCM of 11 and 5,

      Image

      Or 34.4



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