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      Question

      Speed of a car and a bus is 20 km/h and 10 km/h,

      respectively. If the time taken by the car to cover a distance of ‘8x’ km is 1 hour less than time taken by the bus to cover a distance of ‘5x’ km, then find the value of ‘8x’
      A 70 Correct Answer Incorrect Answer
      B 80 Correct Answer Incorrect Answer
      C 75 Correct Answer Incorrect Answer
      D 60 Correct Answer Incorrect Answer
      E None of these Correct Answer Incorrect Answer

      Solution

      According to the question, (5x/10) – (8x/20) = 1 Or, (5x × 2 – 8x × 1) ÷ 20 = 1 Or, (10x – 8x) ÷ 20 = 1 So, x = 10 Required value = 8 × 10 = 80

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