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

 It is currently 21 Oct 2018, 03:24

### 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

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

# John walks 3 miles in 30 minutes, how long will it take him to walk 4.

Author Message
TAGS:

### Hide Tags

Math Expert
Joined: 02 Sep 2009
Posts: 50007
John walks 3 miles in 30 minutes, how long will it take him to walk 4.  [#permalink]

### Show Tags

20 Mar 2017, 04:37
00:00

Difficulty:

15% (low)

Question Stats:

81% (00:48) correct 19% (01:10) wrong based on 82 sessions

### HideShow timer Statistics

John walks 3 miles in 30 minutes, how long will it take him to walk 4.5 miles?

A. 0.25 hours
B. 0.45 hours
C. 0.75 hours
D. 1.5 hours
E. 4.5 hours

_________________
Senior Manager
Joined: 19 Apr 2016
Posts: 274
Location: India
GMAT 1: 570 Q48 V22
GMAT 2: 640 Q49 V28
GPA: 3.5
WE: Web Development (Computer Software)
Re: John walks 3 miles in 30 minutes, how long will it take him to walk 4.  [#permalink]

### Show Tags

20 Mar 2017, 05:14
Bunuel wrote:
John walks 3 miles in 30 minutes, how long will it take him to walk 4.5 miles?

A. 0.25 hours
B. 0.45 hours
C. 0.75 hours
D. 1.5 hours
E. 4.5 hours

3 miles in 30 minutes
let 4.5 miles be covered in x mins

30/3 = x/4.5
x = 10*4.5 = 45 mins = 3/4 hours = 0.75 hours

Hence option C is correct
Hit Kudos if you liked it
Senior Manager
Joined: 06 Dec 2016
Posts: 250
Re: John walks 3 miles in 30 minutes, how long will it take him to walk 4.  [#permalink]

### Show Tags

20 Mar 2017, 11:46
distance = speed x time
3 = speed x 30
speed = 3/30

distance = speed x time
4.5 = 3/30 x time
time = 45 minutes which is equivalent to 0.75 hours which is answer C
Senior Manager
Status: Come! Fall in Love with Learning!
Joined: 05 Jan 2017
Posts: 472
Location: India
Re: John walks 3 miles in 30 minutes, how long will it take him to walk 4.  [#permalink]

### Show Tags

21 Mar 2017, 03:40
Bunuel wrote:
John walks 3 miles in 30 minutes, how long will it take him to walk 4.5 miles?

A. 0.25 hours
B. 0.45 hours
C. 0.75 hours
D. 1.5 hours
E. 4.5 hours

speed = 3/30 = 0.1 miles/minute

time taken for 4.5 miles = 4.5/0.1 = 45 minutes = 0.75hrs
_________________

GMAT Mentors

EMPOWERgmat Instructor
Status: GMAT Assassin/Co-Founder
Affiliations: EMPOWERgmat
Joined: 19 Dec 2014
Posts: 12687
Location: United States (CA)
GMAT 1: 800 Q51 V49
GRE 1: Q170 V170
Re: John walks 3 miles in 30 minutes, how long will it take him to walk 4.  [#permalink]

### Show Tags

21 Mar 2017, 20:09
1
Hi All,

Since this is essentially just a rate question, you can approach the 'math' in a variety of ways. If you have a pacing issue with any section of the GMAT though, simply getting a question correct is NOT the only goal - you have to think about whether you're approaching the prompt in the most efficient way possible or not.

It's worth noting that nothing on the GMAT is ever random - thus, the specific wording of the prompt, and the numbers involved, might provide you with a 'shortcut' in terms of how to approach the question.

Here, we're told that it takes John 30 minutes to walk 3 miles. We're then asked how long it would take John to walk 4.5 miles. Notice how 4.5 miles is exactly 50% greater then 3 miles... that means that the time it takes to walk that distance is 50% greater too...

(30 minutes)(1.5) = 45 minutes

GMAT assassins aren't born, they're made,
Rich
_________________

760+: Learn What GMAT Assassins Do to Score at the Highest Levels
Contact Rich at: Rich.C@empowergmat.com

# Rich Cohen

Co-Founder & GMAT Assassin

Special Offer: Save \$75 + GMAT Club Tests Free
Official GMAT Exam Packs + 70 Pt. Improvement Guarantee
www.empowergmat.com/

*****Select EMPOWERgmat Courses now include ALL 6 Official GMAC CATs!*****

Target Test Prep Representative
Affiliations: Target Test Prep
Joined: 04 Mar 2011
Posts: 2830
Re: John walks 3 miles in 30 minutes, how long will it take him to walk 4.  [#permalink]

### Show Tags

22 Mar 2017, 09:38
Bunuel wrote:
John walks 3 miles in 30 minutes, how long will it take him to walk 4.5 miles?

A. 0.25 hours
B. 0.45 hours
C. 0.75 hours
D. 1.5 hours
E. 4.5 hours

Since John can walk 3 miles in 30 minutes he can walk 3 miles in 1/2 hour. Thus, his rate is 3/(1/2) = 6 mph.

Thus, it will take him 4.5/6 = 45/60 = 3/4 = 0.75 hours to walk 4.5 miles.

_________________

Jeffery Miller

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

Intern
Joined: 11 Dec 2016
Posts: 33
Re: John walks 3 miles in 30 minutes, how long will it take him to walk 4.  [#permalink]

### Show Tags

24 Mar 2017, 10:58
Given:
3 miles-30 mins
Let x= minutes needed to walk 4.5 miles
4.5 miles- x mins
3/4.5=30/x
x=(30/3)*4.5
x= 45 mins
which is equal to
45mins/60mins= 0.75 Hours.

Hence C is the correct answer.
Bunuel, please let me know if this is the correct approach
Manager
Joined: 08 Oct 2016
Posts: 205
Location: United States
Concentration: General Management, Finance
GPA: 2.9
WE: Engineering (Telecommunications)
Re: John walks 3 miles in 30 minutes, how long will it take him to walk 4.  [#permalink]

### Show Tags

25 Mar 2017, 10:15
Bunuel
This is a very easy question I think it it is of less than 500 difficulty level. Am I right?
_________________

Got Q42,V17
Target#01 Q45,V20--April End

Re: John walks 3 miles in 30 minutes, how long will it take him to walk 4. &nbs [#permalink] 25 Mar 2017, 10:15
Display posts from previous: Sort by

# John walks 3 miles in 30 minutes, how long will it take him to walk 4.

 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®.