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

It is currently 30 Aug 2015, 23:09
GMAT Club Tests

Close

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
Your Progress

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

Not interested in getting valuable practice questions and articles delivered to your email? No problem, unsubscribe here.

Events & Promotions

Events & Promotions in June
Open Detailed Calendar

A man needs to go through a train tunnel. he starts through

  Question banks Downloads My Bookmarks Reviews Important topics  
Author Message
Expert Post
Founder
Founder
User avatar
Affiliations: AS - Gold, HH-Diamond
Joined: 04 Dec 2002
Posts: 12941
Location: United States (WA)
GMAT 1: 750 Q49 V42
GPA: 3.5
Followers: 2852

Kudos [?]: 14539 [0], given: 3904

GMAT ToolKit User Premium Member CAT Tests
A man needs to go through a train tunnel. he starts through [#permalink] New post 14 Jul 2003, 12:16
Expert's post
This topic is locked. If you want to discuss this question please re-post it in the respective forum.

A man needs to go through a train tunnel. he starts through the tunnel and when he gets 1/4 the way through the tunnel, he hears the train whistle behind him. you don't know how far away the train is, or how fast it is going, (or how fast he is going). all you know is that

if the man turns around and runs back the way he came, he will just barely make it out of the tunnel alive before the train hits him.
if the man keeps running through the tunnel, he will also just barely make it out of the tunnel alive before the train hits him.
assume the man runs the same speed whether he goes back to the start or continues on through the tunnel. also assume that he accelerates to his top speed instantaneously. assume the train misses him by an infintisimal amount and all those other reasonable assumptions that go along with puzzles like this so that some wanker doesn't say the problem isn't well defined.



-----
from techinterview.org
GMAT Instructor
User avatar
Joined: 07 Jul 2003
Posts: 770
Location: New York NY 10024
Schools: Haas, MFE; Anderson, MBA; USC, MSEE
Followers: 13

Kudos [?]: 80 [0], given: 0

 [#permalink] New post 14 Jul 2003, 13:08
This is an interesting problem and you've done a good job of wanker-proofing it. Now, what exactly is the question you want answered? <grin>(reasonable one solvable with the information given is "how far away is the train and how fast is it going relative to the man?")
_________________

Best,

AkamaiBrah
Former Senior Instructor, Manhattan GMAT and VeritasPrep
Vice President, Midtown NYC Investment Bank, Structured Finance IT
MFE, Haas School of Business, UC Berkeley, Class of 2005
MBA, Anderson School of Management, UCLA, Class of 1993

  [#permalink] 14 Jul 2003, 13:08
Display posts from previous: Sort by

A man needs to go through a train tunnel. he starts through

  Question banks Downloads My Bookmarks Reviews Important topics  


GMAT Club MBA Forum Home| About| Privacy Policy| Terms and Conditions| GMAT Club Rules| Contact| Sitemap

Powered by phpBB © phpBB Group and phpBB SEO

Kindly note that the GMAT® test is a registered trademark of the Graduate Management Admission Council®, and this site has neither been reviewed nor endorsed by GMAC®.