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 the moving escalator will be.

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

At a metro station, a girl walks up a stationary esclator 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

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

At a metro sttion ,a girl walks up a stationary escalator in time t_(2) .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

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 :

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 :