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    Question

    A delivery truck travels at 60 km/h and needs to finish

    its route in 2.5 hours. The driver takes a 25-minute break after covering half the distance. What speed should be maintained for the second half?
    A 65 km/h Correct Answer Incorrect Answer
    B 70 km/h Correct Answer Incorrect Answer
    C 75 km/h Correct Answer Incorrect Answer
    D None of these Correct Answer Incorrect Answer

    Solution

    Total distance = 60 × 2.5 = 150 km
    Time for half = (75 ÷ 60) × 60 = 75 minutes
    Time left = 150 – 75 – 25 = 50 minutes
    Required speed = (75 ÷ 50) × 60 = 90 km/h

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