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At a metro station, a girl walks up a st...

At a metro station, a girl walks up a stationary escalator in time `t_1`. If she remains stationary on the escalator, then the escalator take 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

`sqrt(t_(1)t_(2)`

C

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

D

`t_(1)+t_(2)`

Text Solution

Verified by Experts

The correct Answer is:
C
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