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 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.
C
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:
68% (03:04) correct
32%
(03:08)
wrong
based on 236
sessions
History
Date
Time
Result
Not Attempted Yet
Two trains are moving in the opposite directions on parallel tracks at the speeds of 64 km/hr and 96 km/hr respectively. The first train passes a telegraph post in 5 seconds whereas the second train passes the post in 6 seconds. What is the time taken by the trains to cross each other completely?
A. 3 seconds
B. \(4 \frac{4}{5}\) seconds
C. \(5 \frac{3}{5}\) seconds
D. \(5 \frac{4}{5}\) seconds
E. 6 seconds
Are You Up For the Challenge: 700 Level Questions
A. 3 seconds
B. \(4 \frac{4}{5}\) seconds
C. \(5 \frac{3}{5}\) seconds
D. \(5 \frac{4}{5}\) seconds
E. 6 seconds
Are You Up For the Challenge: 700 Level Questions
Let's say that the length of first train be \(T_1 = 64 \times \dfrac{5}{18} \times 5 \) meters
and, the length of the second train be \(T_2 = 96 \times \dfrac{5}{18} \times 6\) meters
Therefore, total time taken to cross each other running in the opposite direction is
\(T_{Total} = \dfrac{64 \times 5 + 96 \times 6}{64+96} = \dfrac{896}{160} = 5 \frac{3}{5}\) sec
ANS C
and, the length of the second train be \(T_2 = 96 \times \dfrac{5}{18} \times 6\) meters
Therefore, total time taken to cross each other running in the opposite direction is
Quote:
\(T_{Total} = \dfrac{64 \times 5 + 96 \times 6}{64+96} = \dfrac{896}{160} = 5 \frac{3}{5}\) sec
ANS C
General Discussion
03 Jan 2021, 07:03
Kudos
Bookmarks
Correct Answer is c.
A takes 5 sec to cross the post means length of Train A = Speed × Time taken to cross the train
Similar way length of train B.
Now we have total lenght of trains. May divide with sum of spees (opposite direction speeds add up)
Result will be time taken to croass each other.
Posted from my mobile device
A takes 5 sec to cross the post means length of Train A = Speed × Time taken to cross the train
Similar way length of train B.
Now we have total lenght of trains. May divide with sum of spees (opposite direction speeds add up)
Result will be time taken to croass each other.
Posted from my mobile device
