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    Question

    The ratio of the speeds of Raj and Rahul is 5:4

    respectively. Tarun travels 600 km in 10 hours. If Rahul's speed is 20% lower than Tarun’s, how long will Raj take to travel 500 km?
    A 8.33 hrs Correct Answer Incorrect Answer
    B 4.33 hrs Correct Answer Incorrect Answer
    C 5.33 hrs Correct Answer Incorrect Answer
    D 2.22 hrs Correct Answer Incorrect Answer

    Solution

    ATQ,

    Speed of Tarun = 600/10 = 60 km/hr

    So, speed of Rahul = 0.8 × 60 = 48 km/hr

    Therefore, speed of Raj = (5/4) × 48 = 60 km/hr

    Therefore, required time = 500/60 = 8.33 hours

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