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=Quick Thinking Tests=

   
   


 
  Q:
An escalator is descending at constant speed. A walks down and takes 50 steps to reach the bottom. B runs down and takes 90 steps in the same time as A takes 10 steps. how many steps are visible when the escalator is not operating.


 
 
 
 

 
 

hint from Hitequest:
S=50+Ve*T1
S=90+Ve*T2
50=V1*T1
90=V2*T2
10=V1*T2
Answer: S=100
 
 
 

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