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A man walks up a stationary escalator in 90sec.when this man stands on moving escalator he goes up in 60sec.the time taken by the man to walk up the moving escalator is

```
4 years ago

Vikas TU
14146 Points
```							walking up when stationary = 90 sec.l = v1*90when escalator is moving,l = v2*60when botth are moving,l = (v1 + v2)*tsolving the 3 eqns.v2 = 1.5v1and90v1 = (2.5v1)tt = 90/2.5 = > 900/25 = > 180/5 = > 36 s.
```
4 years ago
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