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      Question

      Before servicing, a car runs at a speed of 28 km/hr

      while after servicing, it runs at a speed of 56 km/h. After servicing the car covers a certain distance in 7 hours. How much time would the car have taken to cover the same distance when it was not serviced?
      A 8 hours Correct Answer Incorrect Answer
      B 10 hours Correct Answer Incorrect Answer
      C 12 hours Correct Answer Incorrect Answer
      D 14 hours Correct Answer Incorrect Answer
      E None of these Correct Answer Incorrect Answer

      Solution

      After servicing, Distance covered by the car = 56 ├Ч 7 = 392 km Required time taken = 392/28 = 14 hours

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