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      Question

      Two cars ‘Alto’ and ‘Swift’ starts at the same

      time from Dehradun and from Delhi, individually towards each other at a speed of 40 km/hr and 30 km/hr individually. At the time of their meeting point, it was found that ‘Alto’ travelled 400 km more than ‘Swift’, then what will be the distance between Dehradun and Delhi.
      A 2810 km Correct Answer Incorrect Answer
      B 2500 km Correct Answer Incorrect Answer
      C 1800 km Correct Answer Incorrect Answer
      D 2800 km Correct Answer Incorrect Answer
      E none of these Correct Answer Incorrect Answer

      Solution

      ATQ, we can say that Let, Distance travelled by ‘Swift’ = 'x' km Distance travelled by ‘Swift’ = ('x' + 400) km According to the question, Time for which 'Alto' car travelled = Time for which 'Swift' car travelled Or, (x/30) = {(x + 400)/40} Or, 4x = 3x + 1200 Or, x = 1200 The distance between Dehradun and Delhi =  1200 + 1200 + 400 =  2800 km

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