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Two racecar drivers, A and B , are driving around a circular

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Two racecar drivers, A and B , are driving around a circular [#permalink] New post 19 Aug 2012, 12:22
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76% (01:41) correct 23% (01:03) wrong based on 2 sessions
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.
Thanks for your clarification in advance.
[Reveal] Spoiler: OA
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Re: Catch up type question [#permalink] New post 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".
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Re: Two racecar drivers, A and B , are driving around a circular [#permalink] New post 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.
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Re: Two racecar drivers, A and B , are driving around a circular [#permalink] New post 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.
Thanks for your clarification in advance.


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?
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Re: Two racecar drivers, A and B , are driving around a circular   [#permalink] 25 Aug 2012, 13:33
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