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A motorcycle stunts man belonging to a fair, rides over the vertical w

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Math Expert
Joined: 02 Sep 2009
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A motorcycle stunts man belonging to a fair, rides over the vertical w  [#permalink]

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19 Jan 2015, 04:10
1
1
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Difficulty:

25% (medium)

Question Stats:

78% (01:54) correct 22% (02:23) wrong based on 163 sessions

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A motorcycle stunts man belonging to a fair, rides over the vertical walls of a circular well at an average speed of 54 kph for 5 minutes. If the radius of the well is 5 meters then the distance traveled is:

A. 2.5 kms
B. 3.5 kms
C. 4.5 kms
D. 5.5 kms
E. None of the above

Kudos for a correct solution.

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Re: A motorcycle stunts man belonging to a fair, rides over the vertical w  [#permalink]

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19 Jan 2015, 10:37
2
This question seems odd. I either completely misunderstand it, or the radius of that well is irrelevant. If the guy rides with 54kph for 5 minutes he will ride 4.5km. Answer C. However, I think have never seen a PS question before where they actually provide irrelevant information. Does that happen?
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Re: A motorcycle stunts man belonging to a fair, rides over the vertical w  [#permalink]

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19 Jan 2015, 20:48
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1

Distance travelled $$= 54 * \frac{5}{60} = 4.5 Kms$$

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Joined: 02 Sep 2014
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Re: A motorcycle stunts man belonging to a fair, rides over the vertical w  [#permalink]

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19 Jan 2015, 21:02
1
I agree the radius seems irrelevant.
Distance =54kmph*5 mins = 4.5kms.

Bunuel wrote:
A motorcycle stunts man belonging to a fair, rides over the vertical walls of a circular well at an average speed of 54 kph for 5 minutes. If the radius of the well is 5 meters then the distance traveled is:

A. 2.5 kms
B. 3.5 kms
C. 4.5 kms
D. 5.5 kms
E. None of the above

Kudos for a correct solution.
Senior Manager
Status: Math is psycho-logical
Joined: 07 Apr 2014
Posts: 416
Location: Netherlands
GMAT Date: 02-11-2015
WE: Psychology and Counseling (Other)
Re: A motorcycle stunts man belonging to a fair, rides over the vertical w  [#permalink]

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29 Jan 2015, 09:28
I also did (54/60)*5 = 270/60 = 4.5, and was tempted to choose E, because I didn't know what to do with the radius...

I guess the fact that E exists should make us think that the radius is actually there to create confusion. I think that most of the time answers such as "none of the above" are wrong..
Intern
Joined: 11 Nov 2014
Posts: 11
Re: A motorcycle stunts man belonging to a fair, rides over the vertical w  [#permalink]

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31 Jan 2015, 09:47
Annoying. Wasted my time calculating the diameter.
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Joined: 27 Dec 2013
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Re: A motorcycle stunts man belonging to a fair, rides over the vertical w  [#permalink]

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31 Jan 2015, 10:13
1
I felt the same way and I dont think we need to know the radius of cylinder. Unless there is a logic.

One logic question out this could be.. 'How many revolutions did the stunt man make'

Bunuel wrote:
A motorcycle stunts man belonging to a fair, rides over the vertical walls of a circular well at an average speed of 54 kph for 5 minutes. If the radius of the well is 5 meters then the distance traveled is:

A. 2.5 kms
B. 3.5 kms
C. 4.5 kms
D. 5.5 kms
E. None of the above

Kudos for a correct solution.

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Intern
Joined: 16 Dec 2013
Posts: 37
Location: United States
GPA: 3.7
Re: A motorcycle stunts man belonging to a fair, rides over the vertical w  [#permalink]

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27 Mar 2016, 21:27
Bunuel wrote:
A motorcycle stunts man belonging to a fair, rides over the vertical walls of a circular well at an average speed of 54 kph for 5 minutes. If the radius of the well is 5 meters then the distance traveled is:

A. 2.5 kms
B. 3.5 kms
C. 4.5 kms
D. 5.5 kms
E. None of the above

Kudos for a correct solution.

Target Test Prep Representative
Affiliations: Target Test Prep
Joined: 04 Mar 2011
Posts: 2830
Re: A motorcycle stunts man belonging to a fair, rides over the vertical w  [#permalink]

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19 Apr 2018, 16:31
Bunuel wrote:
A motorcycle stunts man belonging to a fair, rides over the vertical walls of a circular well at an average speed of 54 kph for 5 minutes. If the radius of the well is 5 meters then the distance traveled is:

A. 2.5 kms
B. 3.5 kms
C. 4.5 kms
D. 5.5 kms
E. None of the above

Since distance = rate x time and 5 minutes = 5/60 = 1/12 hour, we have:

Distance = 54 x 1/12 = 54/12 = 9/2 = 4.5 km

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Re: A motorcycle stunts man belonging to a fair, rides over the vertical w &nbs [#permalink] 19 Apr 2018, 16:31
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