Find all School-related info fast with the new School-Specific MBA Forum

 It is currently 06 May 2015, 16:40

### GMAT Club Daily Prep

#### Thank you for using the timer - this advanced tool can estimate your performance and suggest more practice questions. We have subscribed you to Daily Prep Questions via email.

Customized
for You

we will pick new questions that match your level based on your Timer History

Track

every week, we’ll send you an estimated GMAT score based on your performance

Practice
Pays

we will pick new questions that match your level based on your Timer History

# Events & Promotions

###### Events & Promotions in June
Open Detailed Calendar

# reproducing from gmattutor group) Two walls face each other

Author Message
TAGS:
Manager
Joined: 25 Jan 2004
Posts: 92
Location: China
Followers: 1

Kudos [?]: 2 [0], given: 0

reproducing from gmattutor group) Two walls face each other [#permalink]  31 Jan 2004, 01:19
(reproducing from gmattutor group)

Two walls face each other at a certain distance x. A ladder 12m long lies at the bottom of the first wall and rests at the second wall. Another ladder 8m long lies at the bottom of the second wall and rests at the first wall. The two ladders intersect at a point 5m above the ground level (ground is flat between the two walls).

What is the distance x between the two walls?
 Kaplan Promo Code Knewton GMAT Discount Codes Veritas Prep GMAT Discount Codes
Manager
Joined: 26 Dec 2003
Posts: 227
Location: India
Followers: 1

Kudos [?]: 2 [0], given: 0

Couldnt get it, how abt the choices, lets see if we can do backsolving.
SVP
Joined: 16 Oct 2003
Posts: 1815
Followers: 4

Kudos [?]: 50 [0], given: 0

I am unabale to crack it. Dont you think that at what point from one wall does the ladder meet should be given? Any clues... anyone.
Intern
Joined: 05 Jan 2004
Posts: 27
Location: Los Angeles
Followers: 0

Kudos [?]: 0 [0], given: 0

If the answer choices are given, the answer could be figured out...

How abt answr choices
Manager
Joined: 25 Jan 2004
Posts: 92
Location: China
Followers: 1

Kudos [?]: 2 [0], given: 0

I dont have any answer choices.
Director
Joined: 28 Oct 2003
Posts: 503
Location: 55405
Followers: 1

Kudos [?]: 10 [0], given: 0

As the gap approaches 8 m, the ladders would approach meeting on the ground.

As the gap approaches 0 m long, they ladders approach meeting 8m up

If we assume that the progression of the difference is continuous and arithmetic (I do not know if this is a valid assumption!), we can figure it out this way.

I'm still working on it.
Director
Joined: 28 Oct 2003
Posts: 503
Location: 55405
Followers: 1

Kudos [?]: 10 [0], given: 0

My research shows that this problem can be solved with Newton's method.

My research also shows that this problem can be solved in about an hour using Heron's law.

My intuition tells me that this problem isn't relevant to the GMAT.
Manager
Joined: 26 Dec 2003
Posts: 227
Location: India
Followers: 1

Kudos [?]: 2 [0], given: 0

and my research shows that this problem is relevent for those taking GMAT on Mars. What a problem is this. Damn it spoiled the weekend.
Manager
Joined: 25 Jan 2004
Posts: 92
Location: China
Followers: 1

Kudos [?]: 2 [0], given: 0

Manager
Joined: 26 Dec 2003
Posts: 227
Location: India
Followers: 1

Kudos [?]: 2 [0], given: 0

Those who have already taken the GMAT, did u guys came across this type of questions. My God, who is going to remember the complicated formulas in this question.
Similar topics Replies Last post
Similar
Topics:
4 Two cars, Car1 and Car2 move towards each other from X and Y respectiv 4 09 Nov 2010, 12:07
Two canoe riders must be selected from each of two groups of 13 30 Sep 2007, 15:10
Two canoe riders must be selected from each of two groups of 6 27 Mar 2006, 10:34
Two canoe riders must be selected from each of two groups of 2 30 Jan 2006, 15:50
There are two square gardens adjacent to each other, and a 2 12 Dec 2005, 09:48
Display posts from previous: Sort by