It is currently 22 Oct 2017, 23:51

### 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

# Two racecar drivers, Abernathy and Berdoff, are driving

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

### Hide Tags

Intern
Joined: 07 Apr 2012
Posts: 11

Kudos [?]: 8 [0], given: 3

Location: United States
Concentration: Finance, Economics
Schools: Owen '15, Olin '15
GMAT 1: 690 Q50 V31
Two racecar drivers, Abernathy and Berdoff, are driving [#permalink]

### Show Tags

19 Aug 2012, 12:22
1
This post was
BOOKMARKED
00:00

Difficulty:

5% (low)

Question Stats:

75% (00:38) correct 25% (00:56) wrong based on 266 sessions

### HideShow timer Statistics

Two racecar drivers, Abernathy and Berdoff, are driving around a circular track. If Abernathy is 200 meters behind Berdoff and both drivers drive at their respective constant rates, how long, in seconds, will it take for Abernathy to catch up to Berdoff?

(1) The circumference of the racetrack is 1,400 meters.
(2) Abernathy is driving 25 meters per minute faster than Berdoff.

[Reveal] Spoiler:
Two racecar drivers, A and B , are driving around a circular track. If A is 200m behind B and both drivers drive at their respective constant rates, how long, in sec, will it take for A to catch up to B?

(1) The circumference of the trace is 1400m.
(2) B is driving 25 m per min faster than A.

The correct answer is B. Just want to double check.
I suspect that it is a typo, and statement 2 should be: A is 25 m/min faster than B. Otherwise, we do need the circumference of the track (to know how many meters is B behind A) as it will be equivalent to B catching up A then, correct me if I am wrong.
[Reveal] Spoiler: OA

Last edited by Bunuel on 20 Jun 2013, 04:00, edited 2 times in total.
Edited the question.

Kudos [?]: 8 [0], given: 3

Intern
Joined: 30 Dec 2010
Posts: 10

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

Re: Catch up type question [#permalink]

### Show Tags

19 Aug 2012, 13:02
I agree with you. If this is not typo then the answer to this data sufficiency question would be "E".

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

Intern
Joined: 09 Jun 2012
Posts: 12

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

Re: Two racecar drivers, A and B , are driving around a circular [#permalink]

### Show Tags

25 Aug 2012, 13:22
The answer is correct. It has to be 'B'.

If B drivers 25m/min faster than A than A can never catch B, given that B is 200 m ahead of A and both are driving at a constant rate.

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

Senior Manager
Joined: 11 May 2011
Posts: 355

Kudos [?]: 120 [0], given: 46

Location: US
Re: Two racecar drivers, A and B , are driving around a circular [#permalink]

### Show Tags

25 Aug 2012, 13:33
asiriel wrote:
Two racecar drivers, A and B , are driving around a circular track. If A is 200m behind B and both drivers drive at their respective constant rates, how long, in sec, will it take for A to catch up to B?

(1) The circumference of the trace is 1400m.
(2) B is driving 25 m per min faster than A.

The correct answer is B. Just want to double check.
I suspect that it is a typo, and statement 2 should be: A is 25 m/min faster than B. Otherwise, we do need the circumference of the track (to know how many meters is B behind A) as it will be equivalent to B catching up A then, correct me if I am wrong.

I agree that it is a typo. 2 options to correct this question -
1. A is driving 25 m per min faster than B.
2. question should say - how long, in sec, will it take for A and B to meet together?
_________________

-----------------------------------------------------------------------------------------
What you do TODAY is important because you're exchanging a day of your life for it!
-----------------------------------------------------------------------------------------

Kudos [?]: 120 [0], given: 46

Manager
Joined: 04 Mar 2013
Posts: 87

Kudos [?]: 10 [0], given: 6

Location: India
Concentration: General Management, Marketing
GPA: 3.49
WE: Web Development (Computer Software)
Re: Two racecar drivers, A and B , are driving around a circular [#permalink]

### Show Tags

18 Jun 2013, 08:15
asiriel wrote:
Two racecar drivers, A and B , are driving around a circular track. If A is 200m behind B and both drivers drive at their respective constant rates, how long, in sec, will it take for A to catch up to B?

(1) The circumference of the trace is 1400m.
(2) B is driving 25 m per min faster than A.

The correct answer is B. Just want to double check.
I suspect that it is a typo, and statement 2 should be: A is 25 m/min faster than B. Otherwise, we do need the circumference of the track (to know how many meters is B behind A) as it will be equivalent to B catching up A then, correct me if I am wrong.

dude question is correct and QA is wriong the anser is C : if the circumference is known and the speed of is 25 more then as they are travelling on a circle b will come again to overtake him .........

use relative velocity concept keep a as constant and now only b will move with 25m/s fast to cover ther res to the rest of 1200 mts

Kudos [?]: 10 [0], given: 6

Intern
Joined: 23 Apr 2013
Posts: 3

Kudos [?]: [0], given: 27

Concentration: Finance, Entrepreneurship
GMAT Date: 09-21-2013
GPA: 3.94
Re: Two racecar drivers, A and B , are driving around a circular [#permalink]

### Show Tags

20 Jun 2013, 03:25
The answer has to be C.

A. We can do nothing without knowing the respective speeds of A and B. Not sufficient
B. We can do nothing with the speeds when the exact time has to be computed. Not sufficient.
Consider A speed - x m/min
B speed - x+25 m/min

Then after time t
(x + 25)t = xt + 200 which gives t = 8....Now track length = 1400....B leads by 200 m in 8 sec ..It will catch A in (1400/200) *8 = 56 seconds.

Hence together they are suffieiecnt. Hence C

hope this helps

Kudos [?]: [0], given: 27

Math Expert
Joined: 02 Sep 2009
Posts: 41908

Kudos [?]: 129394 [0], given: 12197

Re: Two racecar drivers, A and B , are driving around a circular [#permalink]

### Show Tags

20 Jun 2013, 04:00
krrish wrote:
asiriel wrote:
Two racecar drivers, A and B , are driving around a circular track. If A is 200m behind B and both drivers drive at their respective constant rates, how long, in sec, will it take for A to catch up to B?

(1) The circumference of the trace is 1400m.
(2) B is driving 25 m per min faster than A.

The correct answer is B. Just want to double check.
I suspect that it is a typo, and statement 2 should be: A is 25 m/min faster than B. Otherwise, we do need the circumference of the track (to know how many meters is B behind A) as it will be equivalent to B catching up A then, correct me if I am wrong.

dude question is correct and QA is wriong the anser is C : if the circumference is known and the speed of is 25 more then as they are travelling on a circle b will come again to overtake him .........

use relative velocity concept keep a as constant and now only b will move with 25m/s fast to cover ther res to the rest of 1200 mts

aankittcoolest wrote:
The answer has to be C.

A. We can do nothing without knowing the respective speeds of A and B. Not sufficient
B. We can do nothing with the speeds when the exact time has to be computed. Not sufficient.
Consider A speed - x m/min
B speed - x+25 m/min

Then after time t
(x + 25)t = xt + 200 which gives t = 8....Now track length = 1400....B leads by 200 m in 8 sec ..It will catch A in (1400/200) *8 = 56 seconds.

Hence together they are suffieiecnt. Hence C

hope this helps

Edited the question. The proper version is:
Quote:
Two racecar drivers, Abernathy and Berdoff, are driving around a circular track. If Abernathy is 200 meters behind Berdoff and both drivers drive at their respective constant rates, how long, in seconds, will it take for Abernathy to catch up to Berdoff?

(1) The circumference of the racetrack is 1,400 meters.
(2) Abernathy is driving 25 meters per minute faster than Berdoff.

[Reveal] Spoiler:
B

_________________

Kudos [?]: 129394 [0], given: 12197

Senior Manager
Joined: 29 Oct 2013
Posts: 294

Kudos [?]: 479 [0], given: 197

Concentration: Finance
GPA: 3.7
WE: Corporate Finance (Retail Banking)
Re: Two racecar drivers, Abernathy and Berdoff, are driving [#permalink]

### Show Tags

14 Apr 2014, 06:53
This one is from MGMAT Word Problem Strategy guide page no.115 Q#2. As Bunuel rightly corrected, there was an error in it which MGMAT declared here- http://www.manhattangmat.com/errata-wp-5ed.cfm. Is that why I dont enjoy working with non- OG material much!?!?
_________________

My journey V46 and 750 -> http://gmatclub.com/forum/my-journey-to-46-on-verbal-750overall-171722.html#p1367876

Kudos [?]: 479 [0], given: 197

Re: Two racecar drivers, Abernathy and Berdoff, are driving   [#permalink] 14 Apr 2014, 06:53
Display posts from previous: Sort by

# Two racecar drivers, Abernathy and Berdoff, are driving

 post reply Question banks Downloads My Bookmarks Reviews Important topics

 Powered by phpBB © phpBB Group | Emoji artwork provided by EmojiOne 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®.