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    Question

    A woman travels at 60 km/h and is expected to reach her

    destination in 2 hours. However, after covering half the distance, she takes a 20-minute break. What speed must she maintain for the remaining journey to arrive on time?
    A 75 km/h Correct Answer Incorrect Answer
    B 80 km/h Correct Answer Incorrect Answer
    C 85 km/h Correct Answer Incorrect Answer
    D 90 km/h Correct Answer Incorrect Answer

    Solution

    Total distance = 60 ├Ч 2 = 120 km
    Time for half the journey = (60 ├╖ 60) ├Ч 60 = 60 minutes
    Time remaining = 120 тАУ 60 тАУ 20 = 40 minutes
    Required speed = (60 ├╖ 40) ├Ч 60 = 90 km/h

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