Jump to content


Welcome to BrainDen.com - Brain Teasers Forum

Welcome to BrainDen.com - Brain Teasers Forum. Like most online communities you must register to post in our community, but don't worry this is a simple free process. To be a part of BrainDen Forums you may create a new account or sign in if you already have an account.
As a member you could start new topics, reply to others, subscribe to topics/forums to get automatic updates, get your own profile and make new friends.

Of course, you can also enjoy our collection of amazing optical illusions and cool math games.

If you like our site, you may support us by simply clicking Google "+1" or Facebook "Like" buttons at the top.
If you have a website, we would appreciate a little link to BrainDen.

Thanks and enjoy the Den :-)
Guest Message by DevFuse
 

Photo
- - - - -

Intersection of two ladders


Best Answer k-man, 28 February 2013 - 04:17 PM

Spoiler for answer

Go to the full post


  • Please log in to reply
4 replies to this topic

#1 BMAD

BMAD

    Senior Member

  • Members
  • PipPipPipPip
  • 1702 posts
  • Gender:Female

Posted 28 February 2013 - 06:26 AM

Two ladders are placed cross-wise in an alley to form a lopsided X-shape.  The walls of the alley are not vertical, but are parallel to each other.  The ground is flat and horizontal.  The bottom of each ladder is placed against the opposite wall.  The top of the longer ladder touches the alley wall 18 feet vertically higher than the top of where the shorter ladder touches the opposite wall, which in turn is 6 feet vertically higher than the intersection of the two ladders.  How high vertically above the ground is that intersection?


  • 0

#2 k-man

k-man

    Advanced Member

  • Members
  • PipPipPip
  • 481 posts
  • Gender:Male

Posted 28 February 2013 - 04:17 PM   Best Answer

Spoiler for answer


  • 0

#3 tammie

tammie

    Junior Member

  • Members
  • PipPip
  • 57 posts
  • Gender:Female

Posted 28 February 2013 - 05:35 PM

12 ft? :unsure: not entirely sure this is right. but i'm thinking that the intersection on the smaller ladder would be 2/3 of the ladders length. and the shorter ladderwould meet the top of the wall at the halfway point of the length of the point that the tall ladders top meets the walls. 18ft from the top of the tall to the top of the short and 18 from the top of the short to the ground  minus the 6ft down to the intersection =12 ft. from the ground? and i think that my logic only makes sense in my own head.  


Edited by tammie, 28 February 2013 - 05:44 PM.

  • 0

#4 k-man

k-man

    Advanced Member

  • Members
  • PipPipPip
  • 481 posts
  • Gender:Male

Posted 28 February 2013 - 05:47 PM

Welcome to the Den, tammie!

 

Please use spoilers when posting answers. To add a spoiler to your reply you can use the "S" button above the reply box. If the button doesn't work or if you're posting from a mobile device you can enclose the text you want hidden in the spoiler tags:

 

[ spoiler="visible text"]hidden text[/spoiler]

 

I put a space in the first tag, so that it doesn't get recognized. Without the space it will turn into this:

 

Spoiler for visible text


  • 0

#5 tammie

tammie

    Junior Member

  • Members
  • PipPip
  • 57 posts
  • Gender:Female

Posted 05 March 2013 - 07:13 PM

Spoiler for thanks for the welcome and the info

  • 0




0 user(s) are reading this topic

0 members, 0 guests, 0 anonymous users