This is a relative speed problem applied to an escalator. The effective speed of a person on an escalator relative to the ground is the sum of their walking speed and the escalator's speed when moving in the same direction, and the difference when moving in opposite directions. The total distance (number of steps on the escalator) is the effective speed multiplied by the time.
M walks on an escalator at a rate of 5 steps per second and reaches the other end in 10 seconds. While coming back, walking at the same speed he reaches the starting point in 40 seconds. What is the number of steps on the escalator?
Asked in GPSC Prelims CSP 1 2024 · Topic: Mechanics (Newton's Laws of Motion and their applications)
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