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

It is currently 28 Aug 2016, 04:30
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

Mary passed a certain gas station on a highway while traveling west at

  new topic post reply Question banks Downloads My Bookmarks Reviews Important topics  
Author Message
TAGS:

Hide Tags

Manager
Manager
avatar
Joined: 09 Apr 2010
Posts: 79
Followers: 1

Kudos [?]: 54 [0], given: 3

Mary passed a certain gas station on a highway while traveling west at [#permalink]

Show Tags

New post 01 May 2010, 09:31
00:00
A
B
C
D
E

Difficulty:

  35% (medium)

Question Stats:

75% (02:32) correct 25% (02:28) wrong based on 11 sessions

HideShow timer Statistics

Mary passed a certain gas station on a highway while traveling west at a constant speed of 50 miles per hour. Then, 15 minutes later, Paul passed the same gas station while traveling west at a constant speed of 60 miles per hour. If both drivers maintained their speeds and both remained on the highway for at least 2 hours, how long after he passed the gas station did Paul catch up with Mary?

A. 30 min
B. 45 min
C. 1 hr
D. 1 hr 15 min
E. 1 hr 30 min
[Reveal] Spoiler: OA
Current Student
avatar
Affiliations: ?
Joined: 20 Jul 2009
Posts: 191
Location: Africa/Europe
Schools: Kellogg; Ross ($$); Tuck
Followers: 2

Kudos [?]: 32 [0], given: 6

Re: Mary passed a certain gas station on a highway while traveling west at [#permalink]

Show Tags

New post 01 May 2010, 10:54
When Paul is at the station, Mary is 50/4 miles ahead on the highway. (the distance she drove in 15 min)

every hour, paul drives 10miles more than Mary. how many hours will it takes him to drive 50/4 miles more? the answer is (50/4)/10 = 25/20=1h15min.

Answer D
Senior Manager
Senior Manager
avatar
Joined: 24 Jul 2009
Posts: 297
Followers: 3

Kudos [?]: 118 [0], given: 0

Re: Mary passed a certain gas station on a highway while traveling west at [#permalink]

Show Tags

New post 01 May 2010, 11:28
Net distance traveled by Mary in 15 mins = 50*15/60
So relative distance between mary and Paul, when paul passed through station =50/4

Net time to meet mary is = relative distance/relative speed = (50/4)/(60-50) = 5/4 = 1+1/4 = 1 hr 15 min
CEO
CEO
User avatar
Status: Nothing comes easy: neither do I want.
Joined: 12 Oct 2009
Posts: 2795
Location: Malaysia
Concentration: Technology, Entrepreneurship
Schools: ISB '15 (M)
GMAT 1: 670 Q49 V31
GMAT 2: 710 Q50 V35
Followers: 220

Kudos [?]: 1510 [0], given: 235

Reviews Badge
Re: Mary passed a certain gas station on a highway while traveling west at [#permalink]

Show Tags

New post 01 May 2010, 15:47
Relative speed = 60-50 = 10miles/hour

relative distance between them = distance traveled by Mary in 15 min = 50 * 15/60

50 * 15/60 = 10 t

=> t = 1 hour 15 mins
_________________

Fight for your dreams :For all those who fear from Verbal- lets give it a fight

Money Saved is the Money Earned :)

Jo Bole So Nihaal , Sat Shri Akaal

:thanks Support GMAT Club by putting a GMAT Club badge on your blog/Facebook :thanks

GMAT Club Premium Membership - big benefits and savings

Gmat test review :
http://gmatclub.com/forum/670-to-710-a-long-journey-without-destination-still-happy-141642.html

Re: Mary passed a certain gas station on a highway while traveling west at   [#permalink] 01 May 2010, 15:47
    Similar topics Author Replies Last post
Similar
Topics:
4 Experts publish their posts in the topic Car A and Car B are each traveling along the same stretch of highway Bunuel 5 17 Jul 2016, 08:46
4 Experts publish their posts in the topic Two buses are travelling on the highway from X to Y . guerrero25 7 24 Jun 2013, 14:15
5 A train travels from station A to station B. If it travels Pansi 8 16 Sep 2012, 02:48
1 A certain highway is to be divided into 3 lanes. Vamshi8411 2 19 Aug 2012, 09:27
124 Experts publish their posts in the topic Mary passed a certain gas station on a highway while traveli rags 35 01 Nov 2007, 11:28
Display posts from previous: Sort by

Mary passed a certain gas station on a highway while traveling west at

  new topic post reply Question banks Downloads My Bookmarks Reviews Important topics  


GMAT Club MBA Forum Home| About| 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®.