GMAT Question of the Day - Daily to your Mailbox; hard ones only

It is currently 18 Sep 2018, 07:24

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

Steve traveled the first 2 hours of his journey at 40 mph an

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

Hide Tags

Manager
Manager
avatar
Joined: 22 Sep 2010
Posts: 84
Steve traveled the first 2 hours of his journey at 40 mph an  [#permalink]

Show Tags

New post 22 Oct 2010, 05:51
00:00
A
B
C
D
E

Difficulty:

  5% (low)

Question Stats:

88% (00:41) correct 12% (13:00) wrong based on 161 sessions

HideShow timer Statistics

Steve traveled the first 2 hours of his journey at 40 mph and the remaining 3 hours of his journey at 80 mph. What is his average speed for the entire journey?

A. 60 mph
B. 56.67 mph
C. 53.33 mph
D. 64 mph
E. 66.67 mph
Manager
Manager
User avatar
Joined: 17 Aug 2010
Posts: 51
Re: Steve traveled the first 2 hours of his journey at 40 mph an  [#permalink]

Show Tags

New post 22 Oct 2010, 06:17
pzazz12 wrote:
Steve traveled the first 2 hours of his journey at 40 mph and the remaining 3 hours of his journey at 80 mph. What is his average speed for the entire journey?

A. 60 mph
B. 56.67 mph
C . 53.33 mph
D. 64 mph
E. 66.67 mph



Distance traveled in 2 hours = 2 * 40 = 80 m
Distance traveled in 3 hours = 3 * 80 = 240m

Total distance covered = 240 + 80 = 320m
Total time = 2 + 3 =5 h

Hence avg speed = total distance covered / total time taken

= 320/5 = 64mph


Answer: D
_________________

I don't want kudos.. I want to see smile on your face if I am able to help you.. which is priceless.

Math Expert
User avatar
V
Joined: 02 Sep 2009
Posts: 49204
Re: Steve traveled the first 2 hours of his journey at 40 mph an  [#permalink]

Show Tags

New post 22 Oct 2010, 06:49
pzazz12 wrote:
Steve traveled the first 2 hours of his journey at 40 mph and the remaining 3 hours of his journey at 80 mph. What is his average speed for the entire journey?

A. 60 mph
B. 56.67 mph
C . 53.33 mph
D. 64 mph
E. 66.67 mph


\(average \ speed=\frac{total \ distance}{total \ time}\);

\(total \ distance=2*40+3*8=320\);

\(total \ time=2+3=5\);

\(average \ speed=\frac{total \ distance}{total \ time}=\frac{320}{5}=64\).

Answer: D.
_________________

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

Intern
Intern
avatar
Joined: 18 Sep 2010
Posts: 2
Re: Steve traveled the first 2 hours of his journey at 40 mph an  [#permalink]

Show Tags

New post 22 Oct 2010, 06:52
Rate 40 80 x
Time 2 3 2+3
Distance 80 240 80+240

x = 320/5 = 64
Intern
Intern
avatar
Joined: 15 May 2010
Posts: 11
Re: Steve traveled the first 2 hours of his journey at 40 mph an  [#permalink]

Show Tags

New post 22 Oct 2010, 08:25
[D] for sure.
I do not think this qualifies as a 600-700 question, does it?
Target Test Prep Representative
User avatar
G
Status: Head GMAT Instructor
Affiliations: Target Test Prep
Joined: 04 Mar 2011
Posts: 2835
Re: Steve traveled the first 2 hours of his journey at 40 mph an  [#permalink]

Show Tags

New post 12 Mar 2018, 10:11
pzazz12 wrote:
Steve traveled the first 2 hours of his journey at 40 mph and the remaining 3 hours of his journey at 80 mph. What is his average speed for the entire journey?

A. 60 mph
B. 56.67 mph
C. 53.33 mph
D. 64 mph
E. 66.67 mph


Steve’s total distance was 2 x 40 + 3 x 80 = 80 + 240 = 320 miles.

We can now determine average speed:

Average speed = (total distance)/(total time)

Average speed = 320/5 = 64 mph

Answer: D
_________________

Jeffery Miller
Head of GMAT Instruction

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

Board of Directors
User avatar
P
Status: QA & VA Forum Moderator
Joined: 11 Jun 2011
Posts: 4007
Location: India
GPA: 3.5
WE: Business Development (Commercial Banking)
GMAT ToolKit User Premium Member
Re: Steve traveled the first 2 hours of his journey at 40 mph an  [#permalink]

Show Tags

New post 12 Mar 2018, 11:03
pzazz12 wrote:
Steve traveled the first 2 hours of his journey at 40 mph and the remaining 3 hours of his journey at 80 mph. What is his average speed for the entire journey?

A. 60 mph
B. 56.67 mph
C. 53.33 mph
D. 64 mph
E. 66.67 mph


Avg Speed = \(\frac{d_1 + d_2}{t_1 + t_2}\)

Or, Avg Speed = \(\frac{2*40 + 3*80}{2 + 3}\)

Or, Avg Speed = \(64\), Answer will be (D)
_________________

Thanks and Regards

Abhishek....

PLEASE FOLLOW THE RULES FOR POSTING IN QA AND VA FORUM AND USE SEARCH FUNCTION BEFORE POSTING NEW QUESTIONS

How to use Search Function in GMAT Club | Rules for Posting in QA forum | Writing Mathematical Formulas |Rules for Posting in VA forum | Request Expert's Reply ( VA Forum Only )

VP
VP
User avatar
V
Status: It's near - I can see.
Joined: 13 Apr 2013
Posts: 1255
Location: India
Concentration: International Business, Operations
GMAT 1: 480 Q38 V22
GPA: 3.01
WE: Engineering (Consulting)
Premium Member Reviews Badge CAT Tests
Re: Steve traveled the first 2 hours of his journey at 40 mph an  [#permalink]

Show Tags

New post 14 Apr 2018, 23:29
pzazz12 wrote:
Steve traveled the first 2 hours of his journey at 40 mph and the remaining 3 hours of his journey at 80 mph. What is his average speed for the entire journey?

A. 60 mph
B. 56.67 mph
C. 53.33 mph
D. 64 mph
E. 66.67 mph


Avg. speed = Total distance / Total time

= \(\frac{2 * 40 + 3 * 80}{2 + 3}\)

=\(\frac{320}{5}\)

= 64 mph

(D)
_________________

"Do not watch clock; Do what it does. KEEP GOING."

Re: Steve traveled the first 2 hours of his journey at 40 mph an &nbs [#permalink] 14 Apr 2018, 23:29
Display posts from previous: Sort by

Steve traveled the first 2 hours of his journey at 40 mph an

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

Events & Promotions

PREV
NEXT


GMAT Club MBA Forum Home| About| Terms and Conditions and Privacy Policy| 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®.