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    Question

    A car moves 144 km in 4 hours. The bike goes 1.5 m/s

    slower than the car. What distance (in metres) does the bike cover in 6 minutes 20 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 3,230 m Correct Answer Incorrect Answer

    Solution

    ATQ,

    Speed of car = (144/4) = 36 km/h = 36 × (5/18) = 10 m/s

    Speed of bike = 10 − 1.5 = 8.5 m/s

    6 minutes 20 seconds = 6 × 60 + 20 = 380 seconds

    Required distance = 8.5 × 380 = 3,230 metres

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