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

It is currently 09 Jul 2014, 15:33

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 and B walk from P to Q a dsitance of 42 miles at 3mph and

  Question banks Downloads My Bookmarks Reviews Important topics  
Author Message
TAGS:
Senior Manager
Senior Manager
avatar
Joined: 30 Aug 2003
Posts: 325
Location: dallas , tx
Followers: 1

Kudos [?]: 4 [0], given: 0

GMAT Tests User
A and B walk from P to Q a dsitance of 42 miles at 3mph and [#permalink] New post 12 Feb 2004, 14:15
A and B walk from P to Q a dsitance of 42 miles at 3mph and 4 mph respectively . B reaches Q returns immediately and meets A at R .Find the distance from P to R..?
14
28
18
36
_________________

shubhangi

Director
Director
avatar
Joined: 03 Jul 2003
Posts: 656
Followers: 2

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

GMAT Tests User
 [#permalink] New post 12 Feb 2004, 14:22
is it 36

If correct exp. will follow

Boy! ( or for that matter madam!!) these questions take more than 3 mins.

Last edited by kpadma on 12 Feb 2004, 14:27, edited 1 time in total.
Senior Manager
Senior Manager
avatar
Joined: 30 Aug 2003
Posts: 325
Location: dallas , tx
Followers: 1

Kudos [?]: 4 [0], given: 0

GMAT Tests User
 [#permalink] New post 12 Feb 2004, 14:25
right.. time consuming..
explain.. it plz
_________________

shubhangi

Director
Director
avatar
Joined: 03 Jul 2003
Posts: 656
Followers: 2

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

GMAT Tests User
 [#permalink] New post 12 Feb 2004, 14:37
shubhangi wrote:
right.. time consuming..
explain.. it plz


Break this in to three steps.

Step 1:
Find the location(T) of A when B reaches Q; so for they were travalling in
the same direction.

P----------------T-------- Q
A----->3
B-------->4

Find TQ

Step 2:
A walks towards Q, while B is walking towards A.

T-----R----Q
A-->3
4<------B

Find QR or TR

Step3:
PR = PQ - RQ


Hope this helps!

Last edited by kpadma on 12 Feb 2004, 14:55, edited 1 time in total.
Senior Manager
Senior Manager
User avatar
Joined: 23 Aug 2003
Posts: 462
Location: In the middle of nowhere
Followers: 1

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

GMAT Tests User
 [#permalink] New post 12 Feb 2004, 14:44
A and B are moving in the same direction...
B would take 10.5 hours to reach Q...(42/4)
Meanwhile A would have travelled 31.5 miles... (10.5*3)
B turns back....

A
31.5
34.5 (After 1 hour)
36 (After 1/2 hour)

B
42
38 (After 1 hour)
36 (After 1/2 hour)

Vivek.
_________________

"Start By Doing What Is Necessary ,Then What Is Possible & Suddenly You Will Realise That You Are Doing The Impossible"

Senior Manager
Senior Manager
avatar
Joined: 30 Aug 2003
Posts: 325
Location: dallas , tx
Followers: 1

Kudos [?]: 4 [0], given: 0

GMAT Tests User
 [#permalink] New post 12 Feb 2004, 15:41
well, answer is right... but could someone come with any easy method??? :roll:
_________________

shubhangi

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

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

GMAT Tests User
 [#permalink] New post 12 Feb 2004, 15:52
Well I will continue half way from Vivek's solution. When B has reached the 42 mile mark, A has travelled 31.5 miles. The difference between them is 10.5 miles. 10.5/(add their speeds) * speed of A. So (10.5/7) * 3 = 4.5 miles. So they would meet at 31.5+4.5 = 36 miles. Does it helps Subhangi?
Senior Manager
Senior Manager
avatar
Joined: 30 Aug 2003
Posts: 325
Location: dallas , tx
Followers: 1

Kudos [?]: 4 [0], given: 0

GMAT Tests User
 [#permalink] New post 12 Feb 2004, 15:58
yeah.. thanks.......
hey!! Rakesh.. it msut be very early morning there in india.. were u up whole night...??
_________________

shubhangi

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

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

GMAT Tests User
 [#permalink] New post 12 Feb 2004, 16:01
Subhangi! I am in Australia , to be precise in Melbourne now.
SVP
SVP
User avatar
Joined: 30 Oct 2003
Posts: 1798
Location: NewJersey USA
Followers: 3

Kudos [?]: 29 [0], given: 0

GMAT Tests User
 [#permalink] New post 12 Feb 2004, 18:14
A travels 42-x distance at 3 mph and B travels 42+x at 4 mph
So since they both take the same time

(42-x)/3 = (42+x)/4
so x = 6 They meet at 6 miles from the endpoint
So the distance from start to point R is 42-6 = 36 miles. :smoke
Director
Director
avatar
Joined: 03 Jul 2003
Posts: 656
Followers: 2

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

GMAT Tests User
 [#permalink] New post 12 Feb 2004, 20:16
anandnk wrote:
A travels 42-x distance at 3 mph and B travels 42+x at 4 mph
So since they both take the same time

(42-x)/3 = (42+x)/4
so x = 6 They meet at 6 miles from the endpoint
So the distance from start to point R is 42-6 = 36 miles. :smoke


More elegant approach
Manager
Manager
avatar
Joined: 28 Jan 2004
Posts: 205
Location: India
Followers: 2

Kudos [?]: 10 [0], given: 4

GMAT Tests User
 [#permalink] New post 13 Feb 2004, 01:21
Anandnk urs is the best approach,exactly same to me.
  [#permalink] 13 Feb 2004, 01:21
    Similar topics Author Replies Last post
Similar
Topics:
Experts publish their posts in the topic One hour before John started walking from P to Q, a distance tauchmeister 3 15 Apr 2014, 14:28
2 Experts publish their posts in the topic Lexy walks 5 miles from point A to point B in one hour, then kingflo 4 21 Jul 2013, 13:16
Aaron will jog from home at x miles per hour and then walk beckee529 2 16 Sep 2007, 18:19
aaron will jog from home at x miles per hour and then walk chronolinkz 3 26 Aug 2007, 10:02
A and B walk from P to Q, a distance of 21km at 3 and 4 remgeo 6 04 May 2006, 06:31
Display posts from previous: Sort by

A and B walk from P to Q a dsitance of 42 miles at 3mph and

  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®.