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 2308:00 PM PDT
-09:00 PM PDT
Video explanations + diagnosis of 10 weakest areas + 150+ short videos + study plan!
Apr 2512:30 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 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.
23 May 2024, 01:30
Kudos
Bookmarks
A
Be sure to select an answer first to save it in the Error Log before revealing the correct answer (OA)!
Difficulty:
55%
(hard)
Question Stats:
75% (03:00) correct
25%
(03:19)
wrong
based on 147
sessions
History
Date
Time
Result
Not Attempted Yet
X started from a point A towards point B. After 2 hours, Y started from B towards A. By the time X travelled one-fifth of the total distance, Y had also travelled the same. If Y’s speed is thrice that of X’s speed, find the difference in the times (in hours) taken by X and Y to reach their destinations.
(A) 10
(B) 20
(C) 15
(D) 25
(E) 30
(A) 10
(B) 20
(C) 15
(D) 25
(E) 30
23 May 2024, 07:11
Kudos
Bookmarks
Let 1/5 of the distance covered by X= s*(2+t)
Where s = the speed of X
(2+t) = the time taken by
X to cover 1/5 of
the total
distance.
t = time taken by Y to.
cover the 1/5 of the
total distance.
Also, let 1/5 of the distance covered by Y = 3s*t
Where speed of Y = 3s (because Y's speed is thrice X's speed).
Thus;
s(2+t)= 3st
Divide through by s and solving for t gives us t=1
That is the time taken by Y to cover 1/5 of the distance is 1 hour while the time taken by X to cover 1/5 of the distance is 3 hours i.e (2+1).
Since it took X 3 hours to cover 1/5 of the distance, assuming he continues at the same speed throughout, it will take him 15 hours to cover the total distance i.e (3*5)
Similarly it Will take Y 5 hours i.e (1*5) to cover the whole distance, since it took him 1 hour to cover 1/5 of the total distance.
The difference between the hours taken by X and Y to cover the whole distance would thus be 10 hours i.e (15-5).
Posted from my mobile device
Where s = the speed of X
(2+t) = the time taken by
X to cover 1/5 of
the total
distance.
t = time taken by Y to.
cover the 1/5 of the
total distance.
Also, let 1/5 of the distance covered by Y = 3s*t
Where speed of Y = 3s (because Y's speed is thrice X's speed).
Thus;
s(2+t)= 3st
Divide through by s and solving for t gives us t=1
That is the time taken by Y to cover 1/5 of the distance is 1 hour while the time taken by X to cover 1/5 of the distance is 3 hours i.e (2+1).
Since it took X 3 hours to cover 1/5 of the distance, assuming he continues at the same speed throughout, it will take him 15 hours to cover the total distance i.e (3*5)
Similarly it Will take Y 5 hours i.e (1*5) to cover the whole distance, since it took him 1 hour to cover 1/5 of the total distance.
The difference between the hours taken by X and Y to cover the whole distance would thus be 10 hours i.e (15-5).
Posted from my mobile device
General Discussion
23 May 2024, 03:53
Kudos
Bookmarks
Bunuel
Assuming x as a speed of X and y is speed of Y. Y starts after X traveled for 2Hrs. distance covered by X in that 2 hrs is 2x and Y is traveling with the speed of y which is thrice of x (y=3x). so in one hour Y covers 3x distance and in that same hour X also covers x unit of distance and total of 3x (x+2x) which is 1/5 th of total distance between A and B as per given condition in the question. Therefore total distance is 15x in terms of x and for that X will take 15Hrs to complete and Y will take 5Hrs to complete. Hence difference between their times is 10Hrs. A is the correct answer.
