A motorcycle stunts man belonging to a fair, rides over

Expert replies

Previous Topic Next Topic

BTGmoderatorLU: Moderator; Posts: 2650; Joined: Sun Oct 15, 2017 1:50 pmFollowed by: 6 members

by BTGmoderatorLU » Mon Apr 16, 2018 2:56 pm

Timer

00:00

Your answer

Difficulty–

right wrong

Pick an answer to see how members did

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 km
B. 3.5 km
C. 4.5 km
D. 5.5 km
E. None of the above

The OA is C.

Please, can anyone help me to solve this PS question? I'm confused. Thanks!

Source: Beat The GMAT — Problem Solving | Mon Apr 16, 2018 2:56 pm

GMAT/MBA Expert

[email protected]: Elite Legendary Member; Posts: 10391; Joined: Sun Jun 23, 2013 6:38 pmFollowed by: 511 members; Location: Palo Alto, CA; Thanked: 2867 times; GMAT Score:800

by [email protected] » Tue Apr 17, 2018 7:10 pm

Hi All,

We're told that a motorcycle stuntman rides over the vertical walls of a circular well at an average speed of 54 kph for 5 minutes (in simple terms, he's riding his motorcycle in a circle) and the radius of the well is 5 meters. We're asked for the distance the stuntman travels. While this question is a bit awkwardly-worded, it's essentially just a rate question.

Since we know the motorcycle's speed and time traveled, the fact that it's going in a circle is irrelevant (and by extension, so is the radius of the circle).

5 minutes = 5/60 = 1/12 of an hour

Distance = (54 Km/hour)(1/12 hour)
Distance = 54/12 = 4 6/12 = 4.5 km

Final Answer: C

GMAT assassins aren't born, they're made,
Rich

Contact Rich at [email protected]

Jeff@TargetTestPrep: GMAT Instructor; Posts: 1462; Joined: Thu Apr 09, 2015 9:34 amFollowed by: 22 members; Location: New York, NY; Thanked: 39 times

by Jeff@TargetTestPrep » Thu Apr 19, 2018 4:41 pm

BTGmoderatorLU 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 km
B. 3.5 km
C. 4.5 km
D. 5.5 km
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

Answer: C

Jeffrey Miller
Head of GMAT Instruction
[email protected]

See why Target Test Prep is rated 5 out of 5 stars on BEAT the GMAT. Read our reviews

deloitte247: Legendary Member; Posts: 2214; Joined: Fri Mar 02, 2018 2:22 pmFollowed by: 5 members

by deloitte247 » Sun Apr 22, 2018 10:14 am

Speed= 54kph
Time= 5 minutes
Radius= 5 meters
Distance traveled= ??

Average Speed = distance/time taken
Distance= average speed * time taken
$$dis\tan ce=\ 54\cdot\frac{5}{60}\left(to\ convert\ to\ \sec onds\right)$$
$$dis\tan ce=\ 54\cdot\frac{1}{12}=\frac{54}{12}=4.5kms$$
hence the answer is option B

Featured schoolRound 2 closes Jan 7, 2027 53 days left

Chicago Booth

Since 1982, 10 Booth faculty members have received the Nobel Prize in Economic Sciences, more than any other business school.

#3
U.S. News rank: $175,000
Median base salary: 670
Average GMAT Focus: 635
Students in the class

Apply to Booth Visit chicagobooth.edu See the full profile

Photo: Warren LeMay, CC BY-SA 2.0

GMAT Course Reviews

563 reviews

1168 reviews

431 reviews

359 reviews

147 reviews

5/5

5 Star (563 Reviews)

"Target Test Prep is the closest to the official version of the GMAT exam, about 99% accuracy in terms of the quality and quantity of information. The course has excellently created singular sets of focused lessons and tests for every possible topic that one could come across in the official GMAT exam."

"The TTP course maximizes the efficiency of the time you spend studying. It will take time and effort but I could almost guarantee that if you complete the course exactly as it is laid out you will get an amazing score. They also have a very responsive team willing to help with any questions you might have."

"TTP has two things that I think no other test prep company offers: A teaching approach that reinforces understanding and an attitude that will give you the mental preparedness needed to succeed on the test. TTP gives you a deep understanding of the concept you need to know while teaching you how to think."

Write a Review