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Grade: 11

                        

A person climbs up a stalled escalator in 60seconds. If standing on the same but escalator moving with a constant velocity he takes 40 seconds. How much time is taken by the person to walk up the moving escalator?

4 years ago

Answers : (2)

Vikas TU
12124 Points
							
d = v*60 …................(1)
x = v*t..................(2)
d-x = v*40..............(3)
solve the three eqn.s and get the values respectively.
 
4 years ago
humair khan
11 Points
							dis = speed * timeS = Vp * 60.Ve = S /40       = 60 *Vp / 40Ve   = 1.5 VpsinceVel of person during moving escalator = (Vp + Ve)alsoTime = S /V          = 60 Vp /( Vp + Ve)put Ve = 1.5  Vpaftr solving d answer vl b 24 sec.
						
3 years ago
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