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      Question

      A journey of 250 km is partly done by walking at 5 km/h and

      the rest by cycling at 25 km/h. If the entire trip took 11 hours, find the walking distance.
      A 1.4 km Correct Answer Incorrect Answer
      B 5.4 km Correct Answer Incorrect Answer
      C 6.5 km Correct Answer Incorrect Answer
      D 12.5 km Correct Answer Incorrect Answer

      Solution

      ATQ,

      Let walking distance = d km

      Then, cycling distance = 250 - d km

      Equation: d / 5 + (250 - d) / 25 = 11

      LCM of 5 and 25 = 25

      So, 5d + (250 - d) = 275

      5d + 250 - d = 275

      4d = 25

      d = 6.25

      Distance walked = 6.25 km

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