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

It is currently 20 Oct 2014, 18:40

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 person who runs at 80 mph starts at 8.00, after half an

  Question banks Downloads My Bookmarks Reviews Important topics  
Author Message
TAGS:
Senior Manager
Senior Manager
avatar
Joined: 08 Aug 2005
Posts: 251
Followers: 1

Kudos [?]: 9 [0], given: 0

A person who runs at 80 mph starts at 8.00, after half an [#permalink] New post 21 Apr 2006, 02:28
A person who runs at 80 mph starts at 8.00, after half an hour, another person runs for the same direction at a speed 1/4 more than previous one, when will he overtake the previous one?

A. 8:30
B. 9.00
C. 9.30
D. 10.00
E. 10.30
Director
Director
User avatar
Joined: 05 Feb 2006
Posts: 904
Followers: 1

Kudos [?]: 34 [0], given: 0

 [#permalink] New post 21 Apr 2006, 02:49
Answer E....

I attack this kind of questions in the following manner....

1st runner runs at 80mph per hour
2nd runner 1/4 faster, so 100 mph.....

1st runner starts to run at 8:00
2nd runner at 8:30

During the haf an hour 1st runner will run 40 miles...
2nd runner runs 20 miles per hour faster than the 1st one.... So he will catch the 1st runner in 2 hours.....

Starts at 8:30 + 2 h=10:30

For me it is a very quick approach...
Director
Director
avatar
Joined: 24 Oct 2005
Posts: 662
Location: London
Followers: 1

Kudos [?]: 6 [0], given: 0

 [#permalink] New post 21 Apr 2006, 04:54
First runner,
Speed = 80
Time = t

Second runner,
Speed = 5/4 * 80 = 100
Time = t-.5

Distance is same in both cases
80t = 100(t-.5)
Solving, t = 2.5

From 8.00, 2.5 hrs later is 10.30.
Hence E
  [#permalink] 21 Apr 2006, 04:54
    Similar topics Author Replies Last post
Similar
Topics:
7 Half an hour after Car A started traveling from Newtown to WholeLottaLove 4 17 May 2013, 08:48
A train travels 60mph on the first half of it trip from inwosu 3 14 Dec 2007, 09:00
The car went the first third of the distance at 80 mph, 20 bmwhype2 4 16 Nov 2007, 08:58
A boat with a speed of 80mph started racing at 8:00. After joemama142000 7 20 Feb 2006, 17:13
A locomotive engine without a train can run at 24mph. The neelesh 1 12 Oct 2005, 20:11
Display posts from previous: Sort by

A person who runs at 80 mph starts at 8.00, after half an

  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®.