Duration: 2:40

0 views

0

Preeti reached the metro station and found that the escalator was not working. She walked up the
\( \mathrm{P} \)
stationary escalator in time \( t_{1} \). On other days, if she
W
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 be:
(1) \( \frac{t_{1}+t_{2}}{2} \)
(2) \( \frac{t_{1} t_{2}}{t_{2}-t_{1}} \)
(3) \( \frac{t_{1} t_{2}}{t_{2}+t_{1}} \)
(4) \( t_{1}-t_{2} \)
📲PW App Link - https://bit.ly/YTAI_PWAP
🌐PW Website - https://www.pw.live