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      Question

      A boy goes to school at 4 km/Hr and return at a speed of

      3 km/hr. If he takes 7 hrs in all. Find the distance from his village to school?
      A 12 km Correct Answer Incorrect Answer
      B 28 km Correct Answer Incorrect Answer
      C 7 km Correct Answer Incorrect Answer
      D 21 km Correct Answer Incorrect Answer
      E 14 km Correct Answer Incorrect Answer

      Solution

      Let the distance from village to school be D km According to the question, ⇒ D/4 + D/3 = 7 ⇒ 7D/12 = 7 ⇒ D = 12 km

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