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Mathematical Problems

Escalator Exercise ★★

You walk upwards on an escalator, with a speed of 1 step per second. After 50 steps, you are at the end. You turn around and run downwards with a speed of 5 steps per second. After 125 steps, you are back at the beginning of the escalator.

The question: How many steps do you need if the escalator stands still?

The answer: Click here!

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