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      Question

      The two places are 60 km apart. A and B start walking

      towards each other at the same time and meet each other after 6 hours. Had A traveled with 2/3rd of his speed and B traveled with a double of his speed, they would have met after 5 hours. The speed of A is:
      A 4km/h Correct Answer Incorrect Answer
      B 5km/h Correct Answer Incorrect Answer
      C 10km/h Correct Answer Incorrect Answer
      D 6km/h Correct Answer Incorrect Answer

      Solution

      Let the speeds of β€˜A’ and β€˜B’ be β€˜x’ km/h and β€˜y’ km/h, respectively According to the question, (x + y) = (60/6) = 10 km/h Multiplying throughout by (2), we get (2x + 2y) = 20………. (I) Also, (2x/3) + 2y = 12 Or 2x + 6y = 36……. (II) Subtracting equation (I) from equation (II), we get β€˜y’ = 4 km /h putting the value of y in the equation (ii) x = 6km /h

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