Question

Preeti reached the metro station and found that the
escalator was not working. She walked up the
stationary escalator in time ty. On other days, if
she remains stationary on the moving escalator,
then the escalator takes her up in time tz. The time
taken by her to walk up on the moving escalator
will be
[NEET-2017]
(1) Bytte
titz
(2) Ez-t
2
titz
t2 +04
(4) t-t2
A
​

Answer 1

may this help uhh..........