Mr. Das decided to walk down the escalator of a mall. He found that if he walks down 26 steps, he requires 30seconds to reach the bottom. However, if he steps down 34 stair she would only require 18 seconds to get to the bottom. If the time is measured from the moment the top step begins to descend to the time he steps off the last step at the bottom, find out the height of the stair way insteps?

• let the total step be n ...
  case 1: step taken 26 then remain n-26....
  speed of escalator= (n-26)/30...........(1)
  
  case 2: similarly speed of escalator in this case =(n-34)/18.......(2)
  equating 1 & 2 we will get n=46
• 10 years agoHelpfull: Yes(12) No(0)
• 46 steps..
  here when he step down 26 steps he has 30 seconds for remaining steps.
  if he step down 34 stairs he has only 18 sec.
  30-18=12
  12 secs for 8 steps..
  18 secs for 12 steps.
  12+34=46
  so ans is 46..
• 10 years agoHelpfull: Yes(11) No(4)