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Preeti reached the metro station and fou...

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 the 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 :

A

`(t_(1)+t_(2))/(2)`

B

`(t_(1)t_(2))/(t_(2)-t_(1))`

C

`(t_(1)t_(2))/(t_(2)+t_(1))`

D

`t_(1)-t_(2)`

Text Solution

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The correct Answer is:
C
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Knowledge Check

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