Speed/Distance

Expert replies

Previous Topic Next Topic

vaibhav101: Master | Next Rank: 500 Posts; Posts: 138; Joined: Mon May 01, 2017 11:56 pm; Thanked: 4 times

by vaibhav101 » Wed Jun 06, 2018 9:11 am

Timer

00:00

Answers

Stats

Difficulty—

Trains A and B travel at the same constant rate in opposite directions along the same route between Town G and Town H. If after traveling for 2 hrs, Train A passes Train B, how long does it take Train B to travel the entire distance between both the towns?

1) train B started traveling between Town G and Town H 1 hr after train A started traveling between town H and town G
2) train B travels at the rate of 150 mph

Like this post

Source: Beat The GMAT — Data Sufficiency | Wed Jun 06, 2018 9:11 am

Vincen: Legendary Member; Posts: 2898; Joined: Thu Sep 07, 2017 2:49 pmFollowed by: 5 members; Thanked: 6 times

by Vincen » Mon Jun 11, 2018 12:18 am

Hello.

I want to give my solution. I don't know if it is perfectly right.

We know that

- After traveling for 2 hrs, Train A passes Train B

and we want to answer

- How long does it take Train B to travel the entire distance between both the towns?

First Statement

1) train B started traveling between Town G and Town H 1 hr after train A started traveling between town H and town G

Let's suppose that Train A started at 9:00 am. Then, Train B started at 10:00 am. Therefore, at 11:00 am Train A passes Train B.

Now, since both Trains travel at the same constant rate, then Train B will take 2 hours to arrive in town H. This implies that Train B will arrive in town H at 1:00 pm, therefore Train B will travel the entire distance between both the towns in 3 hours.

This implies that this statement is SUFFICIENT.

Second Statement

2) train B travels at the rate of 150 mph

Here, we don't know anything about the distance between both the towns or the time both Trains started. Therefore, there is not enough information to give an answer.
Hence, this statement is NOT SUFFICIENT.

In conclusion, the correct answer is the option A.

I hope it helps.

Like this post

Post new topic Post Reply

• Page 1 of 1

GMAT Course Reviews

560 reviews

1168 reviews

431 reviews

359 reviews

147 reviews

5/5

5 Star (560 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