Preeti reached the metro station and found that the escalator was not working. She walked up the... VIDEO
Preeti reached the metro station and found that the escalator was not working. She walked up the stationary escalator in time \( t_{1} \). On other days, if she remains stationary on the moving escalator, then the escalator takes her up in time \( t_{2} \). The time taken by her to walk up on the moving escalator will behttps://bit.ly/YTAI_PWAP https://www.pw.live
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