Events & Promotions
|
|
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
Track
Your Progress
Practice
Pays
Not interested in getting valuable practice questions and articles delivered to your email? No problem, unsubscribe here.
Apr 2301:30 AM EDT
-02:30 AM EDT
Struggling with GMAT Verbal as a non-native speaker? Harsh improved his score from 595 to 695 in just 45 days—and scored a 99 %ile in Verbal (V88)! Learn how smart strategy, clarity, and guided prep helped him gain 100 points.
Apr 2212:30 AM EDT
-01:30 AM EDT
At one point, she believed GMAT wasn’t for her. After scoring 595, self-doubt crept in and she questioned her potential. But instead of quitting, she made the right strategic changes. The result? A remarkable comeback to 695. Check out how Saakshi did it.
Apr 2308:00 PM PDT
-09:00 PM PDT
Video explanations + diagnosis of 10 weakest areas + 150+ short videos + study plan!
Apr 2610:00 AM EDT
-11:00 AM EDT
The Target Test Prep course represents a quantum leap forward in GMAT preparation, a radical reinterpretation of the way that students should study. Try before you buy with a 5-day, full-access trial of the course for FREE!
Apr 2711:00 AM EDT
-12:00 PM EDT
Prefer video-based learning? The Target Test Prep OnDemand course is a one-of-a-kind video masterclass featuring 400 hours of lecture-style teaching by Scott Woodbury-Stewart, founder of Target Test Prep and one of the most accomplished GMAT instructors
Apr 2808:00 AM PDT
-11:00 AM PDT
Whether you are just beginning your MBA journey or fine-tuning your path to a 700+ score, GMAT Day is designed to give you a competitive edge.
12 Oct 2022, 17:49
Kudos
Bookmarks
A
Be sure to select an answer first to save it in the Error Log before revealing the correct answer (OA)!
Difficulty:
65%
(hard)
Question Stats:
75% (02:15) correct
25%
(02:23)
wrong
based on 4
sessions
History
Date
Time
Result
Not Attempted Yet
Muthu starts from point A on a circular track with speed 10m/s and meets his friend Vivek after 15 seconds. Now, Muthu and Vivek travel in opposite directions and Vivek reaches Point A in 10 s. Vivek then meets Muthu exactly 14 seconds after crossing point A. Find the circumference of the circular track (in metres).
A. 600
B. 450
C. 800
D. 350
E. 500
from studycopter
A. 600
B. 450
C. 800
D. 350
E. 500
from studycopter
Archived Topic
Hi there,
This topic has been closed and archived due to inactivity or violation of community quality standards. No more replies are possible here.
Where to now? Join ongoing discussions on thousands of quality questions in our Problem Solving (PS) Forum
Still interested in this question? Check out the "Best Topics" block below for a better discussion on this exact question, as well as several more related questions.
Thank you for understanding, and happy exploring!
gmatprepper94111
Joined: 17 Jul 2022
Last visit: 23 Nov 2022
Posts: 24
Own Kudos:
Location: United States (CA)
Concentration: Finance, Strategy
Schools: Stanford '25
GPA: 3.9
WE:Corporate Finance (Finance: Venture Capital)
12 Oct 2022, 18:02
Kudos
Bookmarks
There are some ambiguity problems with this question.
12 Oct 2022, 19:17
Kudos
Bookmarks
rn1112
Agreed, it’s a little unclear but I think the “now” transition is intended to indicate that Vivek is standing at some point on the track and doesn’t leave until Muthu meets him.
Muthu is at point A on the circle. Mark his point A
Vivek is at point V on the circle. Mark this point V.
Muthu travels to meet Vivek at point V first (assume that Vivek does not move).
At Muthu’s speed of (10) m/s it takes him 15 seconds:
(10)(15) = 150 m distance between point A and point V.
Now they both are at point V and leave in opposite directions:
(1st) it takes Vuvek 10 seconds to travel in the opposite direction to point A. This distance is 150 m around the circumference.
Speed of Vivek = (150) / (10) = 15 m/s
(2nd) during this 10 seconds, Muthu is still running in the direction he’s been running in.
(10 m/s) (10 s) = another 100 m around the circumference.
So we have (150) + (100) = 250 m around the circumference so far
(3rd) This part is just an easy relative speed gap distance.
It takes 14 seconds for Vivek (from point A) to meet Muthu (who is 100 m past where Vivek was standing)
This Gap Distance represents the remainder of the circle’s circumference.
(Time) = (Gap Distance to be covered by both) / (Relative Speed when traveling in opposite directions)
Since they are moving towards each other in opposite directions, they are combining to cover the gap distance with their efforts: relative speed = (M speed) + (V speed) = (10 m/s) + (15 m/s) = 25 m/s
14 s = (D) / (25 m/s)
D = (14) (25) = 350 meters
250 + 350 = 600 meter circumference
*A* 600
I agree about the clarity.
Posted from my mobile device
Archived Topic
Hi there,
This topic has been closed and archived due to inactivity or violation of community quality standards. No more replies are possible here.
Where to now? Join ongoing discussions on thousands of quality questions in our Problem Solving (PS) Forum
Still interested in this question? Check out the "Best Topics" block above for a better discussion on this exact question, as well as several more related questions.
Thank you for understanding, and happy exploring!
