New Enroll in RBI Grade B New Batch - Starts on May 21

    Question

    A train travels at a speed of 60 km/h for the first 1

    hour, 50 km/h for the next 2 hours, and 40 km/h for the next 3 hours. What is the average speed of the train?
    A 46.67 km/h Correct Answer Incorrect Answer
    B 50 km/h Correct Answer Incorrect Answer
    C 52.33 km/h Correct Answer Incorrect Answer
    D 55 km/h Correct Answer Incorrect Answer

    Solution

    Total distance = (60 × 1) + (50 × 2) + (40 × 3) = 60 + 100 + 120 = 280 km. Total time = 1 + 2 + 3 = 6 hours. Average speed = Total distance / Total time = 280 / 6 = 46.67 km/h.

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