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?

For something somewhat related please see "Walking down an escalator".

(In reply to Escalated solution by Dej Mar)

Oops!  Right you are, Dej Mar!  Thanks for the escalation.

Posted by Steve Herman on 2008-09-14 09:12:08