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

It is currently 23 Jan 2019, 22:39

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 in January
PrevNext
SuMoTuWeThFrSa
303112345
6789101112
13141516171819
20212223242526
272829303112
Open Detailed Calendar
  • Key Strategies to Master GMAT SC

     January 26, 2019

     January 26, 2019

     07:00 AM PST

     09:00 AM PST

    Attend this webinar to learn how to leverage Meaning and Logic to solve the most challenging Sentence Correction Questions.
  • Free GMAT Number Properties Webinar

     January 27, 2019

     January 27, 2019

     07:00 AM PST

     09:00 AM PST

    Attend this webinar to learn a structured approach to solve 700+ Number Properties question in less than 2 minutes.

Walking at 60% of his usual speed a man takes 24 minutes more to cover

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

Hide Tags

 
Math Expert
User avatar
V
Joined: 02 Sep 2009
Posts: 52437
Walking at 60% of his usual speed a man takes 24 minutes more to cover  [#permalink]

Show Tags

New post 08 Dec 2015, 02:06
00:00
A
B
C
D
E

Difficulty:

  25% (medium)

Question Stats:

79% (02:04) correct 21% (02:53) wrong based on 156 sessions

HideShow timer Statistics

Walking at 60% of his usual speed a man takes 24 minutes more to cover a distance. What is his usual time to cover this distance?

A. 30
B. 36
C. 42
D. 48
E. 54

_________________

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

Manager
Manager
avatar
B
Status: single
Joined: 19 Jan 2015
Posts: 87
Location: India
GPA: 3.2
WE: Sales (Pharmaceuticals and Biotech)
Premium Member
Re: Walking at 60% of his usual speed a man takes 24 minutes more to cover  [#permalink]

Show Tags

New post 08 Dec 2015, 02:15
2
1
speed is inversly proprtional to time

walking at 60% of speed meand 3/5s takes 5/3t.
It takes 24 minutes extra to cover the distance. then

5/3t=t+24

5t=3t+72

2t=72

t=36.


Option B is correct
Director
Director
User avatar
G
Joined: 20 Feb 2015
Posts: 795
Concentration: Strategy, General Management
Premium Member
Re: Walking at 60% of his usual speed a man takes 24 minutes more to cover  [#permalink]

Show Tags

New post 08 Dec 2015, 02:17
1
walking at 60% of his usual speed =3/5
since speed is inversely proportional to time
time taken =5/3
now 5/3 =(1+2/3)
an increase of 2/3=24 minutes
therefore usual time =24*3/2=36 minutes
VP
VP
avatar
P
Joined: 07 Dec 2014
Posts: 1155
Walking at 60% of his usual speed a man takes 24 minutes more to cover  [#permalink]

Show Tags

New post 08 Dec 2015, 15:40
rt=.6r(t+24)
4t=144
t=36 minutes
Manager
Manager
avatar
B
Joined: 14 May 2015
Posts: 51
Re: Walking at 60% of his usual speed a man takes 24 minutes more to cover  [#permalink]

Show Tags

New post 07 May 2017, 02:41
1
time is inverse to speed
60% reduce speed= (100-60) or 40% more time
40%=24
100%=60
usual time=60-24=36
Senior SC Moderator
avatar
V
Joined: 22 May 2016
Posts: 2376
Walking at 60% of his usual speed a man takes 24 minutes more to cover  [#permalink]

Show Tags

New post 08 May 2017, 05:47
1
1
Bunuel wrote:
Walking at 60% of his usual speed a man takes 24 minutes more to cover a distance. What is his usual time to cover this distance?

A. 30
B. 36
C. 42
D. 48
E. 54

Another way: To use r*t=D with just one variable, choose a number that's easily multiplied by .6 for normal rate

1. Let 10 (mi per min) be his normal rate
Slower rate is 60% of 10 = 6 (mi per min)

2. Let x be normal time, and (x+24) be longer time.

3. r*t = D

Normal: 10*x = D
Slower: 6*(x+24) = D

4.Ds are equal, so

10x = 6x+144
4x=144, so
x = 36
Answer B
_________________

Sometimes at night I would sleep open-eyed underneath a sky dripping with stars.
I was alive then.

—Albert Camus

CEO
CEO
User avatar
D
Joined: 11 Sep 2015
Posts: 3360
Location: Canada
Re: Walking at 60% of his usual speed a man takes 24 minutes more to cover  [#permalink]

Show Tags

New post 03 Apr 2018, 09:23
Top Contributor
Bunuel wrote:
Walking at 60% of his usual speed a man takes 24 minutes more to cover a distance. What is his usual time to cover this distance?

A. 30
B. 36
C. 42
D. 48
E. 54


Let's start with a WORD EQUATION:
distance traveled at REGULAR speed = distance traveled at REDUCED speed

distance = (rate)(time)
Let R = REGULAR speed
So 0.6R = REDUCED speed
Let t = travel time (in minutes) at REGULAR speed
So t + 24 = travel time (in minutes) at REDUCED speed

Now plug this information into our WORD EQUATION to get:
Rt = (0.6R)(t + 24)
Divide both sides by R to get: t = (0.6)(t + 24)
Rewrite 0.6 as 3/5 to get: t = (3/5)(t + 24)
Expand: t = 3t/5 + 72/5
Multiply both sides by 5 to get: 5t = 3t + 72
Solve to get: t = 36

Answer: B

Cheers,
Brent
_________________

Test confidently with gmatprepnow.com
Image

GMAT Club Bot
Re: Walking at 60% of his usual speed a man takes 24 minutes more to cover &nbs [#permalink] 03 Apr 2018, 09:23
Display posts from previous: Sort by

Walking at 60% of his usual speed a man takes 24 minutes more to cover

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


Copyright

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®.