Find all School-related info fast with the new School-Specific MBA Forum

It is currently 22 Oct 2014, 07:56

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.

Events & Promotions

Events & Promotions in June
Open Detailed Calendar

On a certain day it took Bill three times as long to drive

  Question banks Downloads My Bookmarks Reviews Important topics  
Author Message
TAGS:
2 KUDOS received
Intern
Intern
avatar
Joined: 22 Nov 2008
Posts: 22
Followers: 0

Kudos [?]: 5 [2] , given: 0

On a certain day it took Bill three times as long to drive [#permalink] New post 14 Dec 2009, 23:04
2
This post received
KUDOS
2
This post was
BOOKMARKED
00:00
A
B
C
D
E

Difficulty:

  45% (medium)

Question Stats:

67% (02:27) correct 33% (01:21) wrong based on 109 sessions
On a certain day it took Bill three times as long to drive from home to work as it took Sue to drive from home to work. How many kilometers did Bill drive from home to work?

(1) Sue drove 10 kilometers from home to work, and the ratio of distance driven from home to work time to drive from home to work was the same for Bill and Sue that day.
(2) The ratio of distance driven from home to work time to drive from home to work for Sue that day was 64 kilometers per hour
[Reveal] Spoiler: OA
Expert Post
1 KUDOS received
Math Expert
User avatar
Joined: 02 Sep 2009
Posts: 23375
Followers: 3607

Kudos [?]: 28780 [1] , given: 2847

Re: Distance and rates [#permalink] New post 15 Dec 2009, 03:22
1
This post received
KUDOS
Expert's post
On a certain day it took Bill three times as long to drive from home to work as it took Sue to drive from home to work. How many kilometers did Bill drive from home to work?

{Bill's Time} = 3*{Sue's Time}

(1) Sue drove 10 kilometers from home to work, and the ratio of distance driven from home to work time to drive from home to work was the same for Bill and Sue that day.

Sue's distance = 10km,

The ratio of distance to time is rate of speed, so we are told that Bill's speed is the same as Sue's. As Bill's time was three times longer, with the same rate he would cover 3 times more distance than Sue did.

{Bill's distance} = 3*{Sue's distance} = 3*10 = 30km.

Sufficient.

(2) (2) The ratio of distance driven from home to work time to drive from home to work for Sue that day was 64 kilometers per hour. Only rate of Sue is given. Not sufficient.

Answer: A.
_________________

NEW TO MATH FORUM? PLEASE READ THIS: ALL YOU NEED FOR QUANT!!!

PLEASE READ AND FOLLOW: 11 Rules for Posting!!!

RESOURCES: [GMAT MATH BOOK]; 1. Triangles; 2. Polygons; 3. Coordinate Geometry; 4. Factorials; 5. Circles; 6. Number Theory; 7. Remainders; 8. Overlapping Sets; 9. PDF of Math Book; 10. Remainders; 11. GMAT Prep Software Analysis NEW!!!; 12. SEVEN SAMURAI OF 2012 (BEST DISCUSSIONS) NEW!!!; 12. Tricky questions from previous years. NEW!!!;

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?
25 extra-hard Quant Tests

Get the best GMAT Prep Resources with GMAT Club Premium Membership

Senior Manager
Senior Manager
User avatar
Joined: 21 Jul 2009
Posts: 367
Schools: LBS, INSEAD, IMD, ISB - Anything with just 1 yr program.
Followers: 14

Kudos [?]: 101 [0], given: 22

Re: Distance and rates [#permalink] New post 15 Dec 2009, 06:37
Bunuel wrote:

Stem:
Bill's Time =3* Sue's Time.


I am an Indian born, supposedly these kinda problems are my bread and butter, but apparently I make such silly mistakes, I read the stem as -
Bill's driving distance = 3 * Sue's driving distance.

Anyhow, A is the answer but, I can't get lucky with every other problem.
_________________

I am AWESOME and it's gonna be LEGENDARY!!!

Intern
Intern
avatar
Joined: 22 Nov 2008
Posts: 22
Followers: 0

Kudos [?]: 5 [0], given: 0

Re: Distance and rates [#permalink] New post 15 Dec 2009, 07:19
thank you Bunuel....but am I wrong to assume that they may have driven the same distance, however, Bill just took a longer time?! That was why I got stuck in asnwering the question. ANy advice you offer will be appreciated.
Expert Post
Math Expert
User avatar
Joined: 02 Sep 2009
Posts: 23375
Followers: 3607

Kudos [?]: 28780 [0], given: 2847

Re: Distance and rates [#permalink] New post 15 Dec 2009, 07:45
Expert's post
dobinnoli wrote:
thank you Bunuel....but am I wrong to assume that they may have driven the same distance, however, Bill just took a longer time?! That was why I got stuck in asnwering the question. ANy advice you offer will be appreciated.


Let's do this algebraically:

Bill's Time =3* Sue's Time --> Bt=3*St

(1) Sue's distance 10km --> Sd=10

\frac{Sd}{St}=\frac{Bd}{Bt} -->

\frac{10}{St}=\frac{Bd}{3*St} -->

Bd=30

As for your question: statement 1 tells us that Bill's and Sue's rates are the same, and Bill spent 3 times more time to cover his distance. Obviously distances can not be the same if rates are same and time are not as Distance=Time*Rate.

Hope it's clear.
_________________

NEW TO MATH FORUM? PLEASE READ THIS: ALL YOU NEED FOR QUANT!!!

PLEASE READ AND FOLLOW: 11 Rules for Posting!!!

RESOURCES: [GMAT MATH BOOK]; 1. Triangles; 2. Polygons; 3. Coordinate Geometry; 4. Factorials; 5. Circles; 6. Number Theory; 7. Remainders; 8. Overlapping Sets; 9. PDF of Math Book; 10. Remainders; 11. GMAT Prep Software Analysis NEW!!!; 12. SEVEN SAMURAI OF 2012 (BEST DISCUSSIONS) NEW!!!; 12. Tricky questions from previous years. NEW!!!;

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?
25 extra-hard Quant Tests

Get the best GMAT Prep Resources with GMAT Club Premium Membership

Intern
Intern
avatar
Joined: 22 Nov 2008
Posts: 22
Followers: 0

Kudos [?]: 5 [0], given: 0

Re: Distance and rates [#permalink] New post 15 Dec 2009, 07:54
YEs, I get it. Thank you, thank you.
Director
Director
avatar
Joined: 29 Nov 2012
Posts: 929
Followers: 12

Kudos [?]: 312 [0], given: 543

On a certain day it took bill three times as long to drive f [#permalink] New post 26 Sep 2013, 07:10
On a certain day it took bill three times as long to drive from home to work as it took sue to drive from home to work. How many kilometers did bill drive from home to work?

1) Sue drove 10 kilometers from home to work and the ratio of \frac{Distance driven from home to work}{time to drive from home to work} was the same for bill and sue that day

2) the ratio of \frac{Distance driven from home to work}{time to drive from home to work} for sue that day was 64 kilometres per hour


Please provide detailed explanations!
_________________

Click +1 Kudos if my post helped...

Amazing Free video explanation for all Quant questions from OG 13 and much more http://www.gmatquantum.com/og13th/

GMAT Prep software What if scenarios gmat-prep-software-analysis-and-what-if-scenarios-146146.html

Expert Post
Math Expert
User avatar
Joined: 02 Sep 2009
Posts: 23375
Followers: 3607

Kudos [?]: 28780 [0], given: 2847

Re: On a certain day it took bill three times as long to drive f [#permalink] New post 26 Sep 2013, 07:35
Expert's post
fozzzy wrote:
On a certain day it took bill three times as long to drive from home to work as it took sue to drive from home to work. How many kilometers did bill drive from home to work?

1) Sue drove 10 kilometers from home to work and the ratio of \frac{Distance driven from home to work}{time to drive from home to work} was the same for bill and sue that day

2) the ratio of \frac{Distance driven from home to work}{time to drive from home to work} for sue that day was 64 kilometres per hour


Please provide detailed explanations!


Merging similar topics. Please search before posting.
_________________

NEW TO MATH FORUM? PLEASE READ THIS: ALL YOU NEED FOR QUANT!!!

PLEASE READ AND FOLLOW: 11 Rules for Posting!!!

RESOURCES: [GMAT MATH BOOK]; 1. Triangles; 2. Polygons; 3. Coordinate Geometry; 4. Factorials; 5. Circles; 6. Number Theory; 7. Remainders; 8. Overlapping Sets; 9. PDF of Math Book; 10. Remainders; 11. GMAT Prep Software Analysis NEW!!!; 12. SEVEN SAMURAI OF 2012 (BEST DISCUSSIONS) NEW!!!; 12. Tricky questions from previous years. NEW!!!;

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?
25 extra-hard Quant Tests

Get the best GMAT Prep Resources with GMAT Club Premium Membership

Re: On a certain day it took bill three times as long to drive f   [#permalink] 26 Sep 2013, 07:35
    Similar topics Author Replies Last post
Similar
Topics:
On a certain day it took Bill three times as long to drive AugiTh 1 26 Jun 2007, 05:09
On a certain day it took Bill three times as long to drive Amit05 6 19 May 2007, 10:30
On a certain day it took Bill three times as long to drive Kishore 5 30 Nov 2005, 06:47
On a certain day it took Bill three times as long to drive trulyblessed 2 08 Sep 2005, 00:50
On a certain day it took Bill three times as long to drive trulyblessed 1 08 Sep 2005, 00:47
Display posts from previous: Sort by

On a certain day it took Bill three times as long to drive

  Question banks Downloads My Bookmarks Reviews Important topics  


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

Powered by phpBB © phpBB Group and phpBB SEO

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®.