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## Homework Statement

An escalator is moving down. Person A takes 50 steps and Person B takes 75 steps while it is moving down. The time taken by Person A to take one step is equal to the time taken by Person B to take 3 steps. Find the number of steps in the escalator while it is stationary.

## Homework Equations

??

## The Attempt at a Solution

I think v

_{m}=3v

_{c}. v

_{e}=(s

_{e}-75)/t etc. ... are we given enough information to complete the question?