Answered Questions

Oct 28 2007
06:03 AM

51366

6

Mr. Shah decided to walk down the escalator of a tube station. He found that if he walks down 26 steps, he requires 30 seconds to reach the bottom. However, if he steps down 34 stairs he 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 in steps?

cse_3rd

Shubham Takode

Jul 27th, 2015

In 12 sec(30-18) he walks down 8(34-26) steps.
therefore, (8*30)/12 =20 steps.
So, the total height of the stair way in steps=(26+20)=46 steps

krishnna

Aug 25th, 2011

46

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