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      Question

      A sedan clocks 324 km in 4 hours. The motorbike is 5.5

      m/s slower than the sedan. Compute the distance (in metres) the bike covers in 1 minute 40 seconds.
      A 4,200 m Correct Answer Incorrect Answer
      B 8,500 m Correct Answer Incorrect Answer
      C 2,310 m Correct Answer Incorrect Answer
      D 1,700 m Correct Answer Incorrect Answer

      Solution

      ATQ,

      Speed of sedan = (324/4) = 81 km/h = 81 × (5/18) = 22.5 m/s

      Speed of bike = 22.5 − 5.5 = 17 m/s

      1 minute 40 seconds = 60 + 40 = 100 seconds

      Required distance = 17 × 100 = 1,700 metres

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