Preeti reached the metro station and found that escalator was not working.she walked up the stationary escalator in t1 sec. On other days,if she remain stationary on moving escalator,then escalator takes her up in t2 sec. Then time taken by her walk up on moving escalator will be...
Options
1- t1 + t2 / 2
2 - t1 t2 /t2 - t1
3 - t1 t2 / t1 + t2
4 - t1 - t2
Answers
Answered by
4
Answer:t1+t2/2
Step-by-step explanation:
Answered by
0
1st one answer is t1+t2/2
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