Solved

ESCALATOR PROBLEM

Posted on 2006-06-16
5
897 Views
Last Modified: 2008-03-03
There is a escalator and 2 persons move down it.A takes 50 steps and B takes 75 steps while the escalator is moving down.Given that the time taken by A to take 1 step is equal to time taken by B to take 3 steps.Find the no. of steps in the escalator while it is staionary

0
Comment
Question by:sinha_anshul26
[X]
Welcome to Experts Exchange

Add your voice to the tech community where 5M+ people just like you are talking about what matters.

  • Help others & share knowledge
  • Earn cash & points
  • Learn & ask questions
  • 3
5 Comments
 
LVL 37

Assisted Solution

by:Harisha M G
Harisha M G earned 20 total points
ID: 16922512
0
 

Author Comment

by:sinha_anshul26
ID: 16925250
i know but i need sol to this one
0
 
LVL 20

Accepted Solution

by:
alainbryden earned 480 total points
ID: 16926096
This is easy after solving the other one.

Let the number of steps = x.
No of steps rolled in by the escalator when A is walking down = x - 50. similarly for B is  x - 75
By the time A walked 1 step, the number of steps removed by the escalator = (x - 50)/50
By the time B walked 3 step, the number of steps removed by the escalator = 3(x - 75)/75
(x - 50)/50  =  3(x - 75)/75
(x - 50)*75 =  3(x - 75)*50
75x - 3750  = 150x - 11520
       75x     =    7500
            x = 100

Q.E.D.
0
 

Author Comment

by:sinha_anshul26
ID: 16926279
Hi Alain, Thanks for your quick help,
however I am not able to understand logic of these two equations....

By the time A walked 1 step, the number of steps removed
by the escalator = (x - 50)/50
By the time B walked 3 step, the number of steps removed
by the escalator = 3(x - 75)/75
0
 

Author Comment

by:sinha_anshul26
ID: 16926353
ok, it clear now...
Thaks Alain alot.
0

Featured Post

Technology Partners: We Want Your Opinion!

We value your feedback.

Take our survey and automatically be enter to win anyone of the following:
Yeti Cooler, Amazon eGift Card, and Movie eGift Card!

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

Suggested Solutions

Title # Comments Views Activity
A question about the number of divisors for perfect squares 11 918
Math 6 414
Gin and tonic 11 700
Identify the song 5 190
Arrow Electronics was searching for a KVM  (Keyboard/Video/Mouse) switch that could display on one single monitor the current status of all units being tested on the rack.
This article describes a method of delivering Word templates for use in merging Access data to Word documents, that requires no computer knowledge on the part of the recipient -- the templates are saved in table fields, and are extracted and install…
Email security requires an ever evolving service that stays up to date with counter-evolving threats. The Email Laundry perform Research and Development to ensure their email security service evolves faster than cyber criminals. We apply our Threat…

762 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question