Car A and car B are driving towards each other along

Expert replies

Previous Topic Next Topic

swerve: Legendary Member; Posts: 2604; Joined: Sun Oct 29, 2017 2:04 pmFollowed by: 6 members

by swerve » Sat Apr 28, 2018 1:37 pm

Timer

00:00

Your answer

Difficulty–

right wrong

Pick an answer to see how members did

Car A and car B are driving towards each other along straight line. Car A travels at a constant speed of 60 miles/hr and car B travels at a constant speed of 40 miles/hr. If at noon they are separated by a distance of 300 miles, at what time will they meet?

A. 2.40 pm
B. 3.00 pm
C. 3.20 pm
D. 3.40 pm
E. 4.00 pm

The OA is B.

Please, can anyone explain this PS question? I tried to solve it but I can't get the correct answer. I need help. Thanks.

Source: Beat The GMAT — Problem Solving | Sat Apr 28, 2018 1:37 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] » Sat Apr 28, 2018 7:16 pm

Hi swerve,

We're told that Car A and car B are driving towards each other along straight line, Car A travels at a constant speed of 60 miles/hr, car B travels at a constant speed of 40 miles/hr and at NOON they are separated by a distance of 300 miles. We're asked for the time at which they meet.

Based on the two speeds, we know that every HOUR the TOTAL distance traveled by the two cars will be 60 miles + 40 miles = 100 miles. Thus, since the distance between the cars at NOON is 300 miles, it will take (300 miles)/(100 miles/hour) = 3 hours for the two cars to meet. Three hours AFTER Noon = 3:00 pm.

Final Answer: B

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 » Wed May 02, 2018 9:31 am

swerve wrote:Car A and car B are driving towards each other along straight line. Car A travels at a constant speed of 60 miles/hr and car B travels at a constant speed of 40 miles/hr. If at noon they are separated by a distance of 300 miles, at what time will they meet?

A. 2.40 pm
B. 3.00 pm
C. 3.20 pm
D. 3.40 pm
E. 4.00 pm

We can use the following formula:

distance of car A + distance of car B = total distance = 300

We can let the time of car A and car B = t. Thus:

60t + 40t = 300

100t = 300

t = 3

Since they are separated by a distance of 300 miles at noon and they will meet three hours later, then they will meet at 3 p.m.

Answer: B

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

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