It is currently 21 Oct 2017, 05:34

Close

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

we will pick new questions that match your level based on your Timer History

Track
Your Progress

every week, we’ll send you an estimated GMAT score based on your performance

Practice
Pays

we will pick new questions that match your level based on your Timer History

Not interested in getting valuable practice questions and articles delivered to your email? No problem, unsubscribe here.

Close

Request Expert Reply

Confirm Cancel

Events & Promotions

Events & Promotions in June
Open Detailed Calendar

Two cars are traveling in the same direction along the same route. The

  new topic post reply Question banks Downloads My Bookmarks Reviews Important topics  
Author Message
TAGS:

Hide Tags

Expert Post
Math Expert
User avatar
V
Joined: 02 Sep 2009
Posts: 41893

Kudos [?]: 129093 [0], given: 12194

Two cars are traveling in the same direction along the same route. The [#permalink]

Show Tags

New post 08 Sep 2016, 04:26
00:00
A
B
C
D
E

Difficulty:

  5% (low)

Question Stats:

88% (00:40) correct 13% (00:54) wrong based on 100 sessions

HideShow timer Statistics

Two cars are traveling in the same direction along the same route. The red car travels at a constant speed of 40 miles per hour, and the black car is traveling at a constant speed of 50 miles per hour. If the red car is 20 miles ahead of the black car, how many hours will it take the black car to overtake the red car?

A. 0.1
B. 0.6
C. 1
D. 1.2
E. 2
[Reveal] Spoiler: OA

_________________

New to the Math Forum?
Please read this: Ultimate GMAT Quantitative Megathread | All You Need for Quant | PLEASE READ AND FOLLOW: 12 Rules for Posting!!!

Resources:
GMAT Math Book | Triangles | Polygons | Coordinate Geometry | Factorials | Circles | Number Theory | Remainders; 8. Overlapping Sets | PDF of Math Book; 10. Remainders | GMAT Prep Software Analysis | SEVEN SAMURAI OF 2012 (BEST DISCUSSIONS) | Tricky questions from previous years.

Collection of Questions:
PS: 1. Tough and Tricky questions; 2. Hard questions; 3. Hard questions part 2; 4. Standard deviation; 5. Tough Problem Solving Questions With Solutions; 6. Probability and Combinations Questions With Solutions; 7 Tough and tricky exponents and roots questions; 8 12 Easy Pieces (or not?); 9 Bakers' Dozen; 10 Algebra set. ,11 Mixed Questions, 12 Fresh Meat

DS: 1. DS tough questions; 2. DS tough questions part 2; 3. DS tough questions part 3; 4. DS Standard deviation; 5. Inequalities; 6. 700+ GMAT Data Sufficiency Questions With Explanations; 7 Tough and tricky exponents and roots questions; 8 The Discreet Charm of the DS; 9 Devil's Dozen!!!; 10 Number Properties set., 11 New DS set.


What are GMAT Club Tests?
Extra-hard Quant Tests with Brilliant Analytics

Kudos [?]: 129093 [0], given: 12194

BSchool Forum Moderator
User avatar
P
Joined: 26 Feb 2016
Posts: 1465

Kudos [?]: 596 [0], given: 16

Location: India
Concentration: General Management, Leadership
WE: Sales (Retail)
Premium Member CAT Tests
Re: Two cars are traveling in the same direction along the same route. The [#permalink]

Show Tags

New post 08 Sep 2016, 04:40
Relative speed is 10 mile per hour and distance to travel is 20 miles. Time take to travel this distance is (20/10). Hence, it will take the black car 2 hours to cross the red car. Option E

Sent from my Lenovo A7000-a using GMAT Club Forum mobile app
_________________

Stay hungry, Stay foolish

2017-2018 MBA Deadlines

Class of 2020: Rotman Thread | Schulich Thread
Class of 2019: Sauder Thread

Kudos [?]: 596 [0], given: 16

Intern
Intern
avatar
Joined: 05 Sep 2015
Posts: 48

Kudos [?]: 2 [0], given: 12

Re: Two cars are traveling in the same direction along the same route. The [#permalink]

Show Tags

New post 09 Sep 2016, 01:23
time = distance between the cars/ relative speed.
relative speed here is 50-40 , since they are going in the same direction.
time= 20/50-40 = 2 hours.

Kudos [?]: 2 [0], given: 12

Manager
Manager
User avatar
Joined: 15 Apr 2016
Posts: 84

Kudos [?]: 20 [0], given: 66

Re: Two cars are traveling in the same direction along the same route. The [#permalink]

Show Tags

New post 09 Sep 2016, 01:54
Option E

20+40t=50t
t=2
_________________

Cheers,
Shri
-------------------------------
GMAT is not an Exam... it is a war .. Let's Conquer !!!

Kudos [?]: 20 [0], given: 66

Manager
Manager
User avatar
B
Joined: 19 Jul 2017
Posts: 86

Kudos [?]: 10 [0], given: 85

Location: India
Concentration: General Management, Strategy
GPA: 3.5
Re: Two cars are traveling in the same direction along the same route. The [#permalink]

Show Tags

New post 06 Sep 2017, 04:49
Bunuel wrote:
Two cars are traveling in the same direction along the same route. The red car travels at a constant speed of 40 miles per hour, and the black car is traveling at a constant speed of 50 miles per hour. If the red car is 20 miles ahead of the black car, how many hours will it take the black car to overtake the red car?

A. 0.1
B. 0.6
C. 1
D. 1.2
E. 2


Using the concept of relative speed in same direction gives Distance/Relative speed of black car to red.

i.e; 20/10 = 2hrs.

Ans:E

Kudos [?]: 10 [0], given: 85

Expert Post
Target Test Prep Representative
User avatar
S
Status: Founder & CEO
Affiliations: Target Test Prep
Joined: 14 Oct 2015
Posts: 1648

Kudos [?]: 847 [0], given: 3

Location: United States (CA)
Re: Two cars are traveling in the same direction along the same route. The [#permalink]

Show Tags

New post 11 Sep 2017, 10:58
Bunuel wrote:
Two cars are traveling in the same direction along the same route. The red car travels at a constant speed of 40 miles per hour, and the black car is traveling at a constant speed of 50 miles per hour. If the red car is 20 miles ahead of the black car, how many hours will it take the black car to overtake the red car?

A. 0.1
B. 0.6
C. 1
D. 1.2
E. 2


We can use the following formula:

time = (change in distance)/(change in rate)

time = 20/10 = 2 hours

Answer: E
_________________

Scott Woodbury-Stewart
Founder and CEO

GMAT Quant Self-Study Course
500+ lessons 3000+ practice problems 800+ HD solutions

Kudos [?]: 847 [0], given: 3

Re: Two cars are traveling in the same direction along the same route. The   [#permalink] 11 Sep 2017, 10:58
Display posts from previous: Sort by

Two cars are traveling in the same direction along the same route. The

  new topic post reply Question banks Downloads My Bookmarks Reviews Important topics  


GMAT Club MBA Forum Home| About| Terms and Conditions| GMAT Club Rules| Contact| Sitemap

Powered by phpBB © phpBB Group | Emoji artwork provided by EmojiOne

Kindly note that the GMAT® test is a registered trademark of the Graduate Management Admission Council®, and this site has neither been reviewed nor endorsed by GMAC®.