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    Question

    A bus covers 216 km in 3 hours. The bike’s speed is 6

    m/s less than the bus. How far (in metres) does the bike travel in 4 minutes 15 seconds?
    A 2,000 m Correct Answer Incorrect Answer
    B 3,800 m Correct Answer Incorrect Answer
    C 3,570 m Correct Answer Incorrect Answer
    D 3,410 m Correct Answer Incorrect Answer
    E None of these Correct Answer Incorrect Answer

    Solution

    ATQ, Speed of bus = (216/3) = 72 km/h = 72 × (5/18) = 20 m/s Speed of bike = 20 − 6 = 14 m/s 4 minutes 15 seconds = 4 × 60 + 15 = 255 seconds Required distance = 14 × 255 = 3,570 metres

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