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

It is currently 24 Oct 2014, 05:46

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

A certain taxi company charges $3.10 for the first 1/5 of a

  Question banks Downloads My Bookmarks Reviews Important topics  
Author Message
TAGS:
1 KUDOS received
Intern
Intern
avatar
Joined: 18 Nov 2007
Posts: 9
Followers: 0

Kudos [?]: 3 [1] , given: 0

A certain taxi company charges $3.10 for the first 1/5 of a [#permalink] New post 04 Dec 2007, 19:37
1
This post received
KUDOS
3
This post was
BOOKMARKED
00:00
A
B
C
D
E

Difficulty:

  5% (low)

Question Stats:

83% (01:56) correct 17% (01:43) wrong based on 138 sessions
A certain taxi company charges $3.10 for the first 1/5 of a mile plus $0.40 for each additional 1/5 of a mile. What would this company charge for a taxi ride that was 8 miles long?

A. 15.60
B. 16.00
C. 17.50
D. 18.70
E. 19.10
[Reveal] Spoiler: OA
1 KUDOS received
Director
Director
avatar
Joined: 09 Aug 2006
Posts: 767
Followers: 1

Kudos [?]: 52 [1] , given: 0

Re: Taxi Company PLEASE HELP [#permalink] New post 04 Dec 2007, 20:59
1
This post received
KUDOS
goodglory wrote:
A certain taxi company charges $3.10 for the first 1/5 of a mile plus .40 for each addtional 1/5 of a mile. What would this company charge for a taxi ride that was 8 miles long?

A. 15.60
B. 16.00
C. 17.50
D. 18.70
E. 19.10


How many 1/5 miles does 8 miles contain?
= 8/(1/5) = 40
Charge for first 1/5 mile = 3.10
Charge for remaining 39 1/5 miles = 39*.4 = 15.6
Total charge = 15.6 + 3.10 = 18.70
CEO
CEO
User avatar
Joined: 29 Mar 2007
Posts: 2593
Followers: 16

Kudos [?]: 197 [0], given: 0

Re: Taxi Company PLEASE HELP [#permalink] New post 04 Dec 2007, 19:57
goodglory wrote:
A certain taxi company charges $3.10 for the first 1/5 of a mile plus .40 for each addtional 1/5 of a mile. What would this company charge for a taxi ride that was 8 miles long?

A. 15.60
B. 16.00
C. 17.50
D. 18.70
E. 19.10


so 3.10 for first 1/5mile and .4* so how many 1/5's in 7 and 4/5 miles? well 5 per 7 and 4 for 4/5 So should be.

3.10 + (.4*5)*7 + .4*4 --> 3.10 + 14+1.6 = 18.70

D
CEO
CEO
User avatar
Joined: 29 Aug 2007
Posts: 2500
Followers: 54

Kudos [?]: 512 [0], given: 19

Re: Taxi Company PLEASE HELP [#permalink] New post 04 Dec 2007, 20:22
goodglory wrote:
A certain taxi company charges $3.10 for the first 1/5 of a mile plus .40 for each addtional 1/5 of a mile. What would this company charge for a taxi ride that was 8 miles long?

A. 15.60
B. 16.00
C. 17.50
D. 18.70
E. 19.10


= 3.10 + (8 - 0.2) 0.4/0.2
= 3.10 + 15.6
= 18.7
Intern
Intern
avatar
Joined: 18 Nov 2007
Posts: 9
Followers: 0

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

 [#permalink] New post 04 Dec 2007, 20:26
I am confused because 1/5 of a mile is 1.6.
1/5 of 8 miles is 1.6 and then there are 6.4 miles left?

I don't get it?!
SVP
SVP
avatar
Joined: 04 May 2006
Posts: 1941
Schools: CBS, Kellogg
Followers: 18

Kudos [?]: 322 [0], given: 1

Premium Member
Re: Taxi Company PLEASE HELP [#permalink] New post 04 Dec 2007, 21:45
GMAT TIGER wrote:
goodglory wrote:
A certain taxi company charges $3.10 for the first 1/5 of a mile plus .40 for each addtional 1/5 of a mile. What would this company charge for a taxi ride that was 8 miles long?

A. 15.60
B. 16.00
C. 17.50
D. 18.70
E. 19.10


= 3.10 + (8 - 0.2) 0.4/0.2
= 3.10 + 15.6
= 18.7


Dear Gmatiger

Can you help me to understand why the result must be divided into 0.2?
I am confused!
Thanks,
CEO
CEO
User avatar
Joined: 29 Aug 2007
Posts: 2500
Followers: 54

Kudos [?]: 512 [0], given: 19

Re: Taxi Company PLEASE HELP [#permalink] New post 05 Dec 2007, 16:52
sondenso wrote:
GMAT TIGER wrote:
goodglory wrote:
A certain taxi company charges $3.10 for the first 1/5 of a mile plus 0.40 for each addtional 1/5 of a mile. What would this company charge for a taxi ride that was 8 miles long?

A. 15.60
B. 16.00
C. 17.50
D. 18.70
E. 19.10


= 3.10 + (8 - 0.2) 0.4/0.2
= 3.10 + 15.6
= 18.7


Dear Gmatiger

Can you help me to understand why the result must be divided into 0.2?
I am confused!
Thanks,


it is just an unitary method:

The cost per 1/5 (0.2) miles is 0.4 beyond first 1/5 (0.2) miles.
so 0.2 miles costs 0.4, then how much 1 mile costs? 2. how 0.4/0.2 = 2.
so 1 mile costs 2, then 7.8 (=8-0.2) miles cost 7.8x2 = 15.6

so total = 3.1+15.6 = 18.7
Director
Director
User avatar
Joined: 12 Jul 2007
Posts: 867
Followers: 12

Kudos [?]: 202 [0], given: 0

 [#permalink] New post 05 Dec 2007, 18:22
fastest way for me...

8 miles * 5 = 40 fifths of a mile
40 * .40 = $16
$16 - .40 = 15.60 + 3.10 = 18.70

breaking it up like that lets you do the mental math in your head almost instantly. so much easier IMO.
SVP
SVP
avatar
Joined: 04 May 2006
Posts: 1941
Schools: CBS, Kellogg
Followers: 18

Kudos [?]: 322 [0], given: 1

Premium Member
 [#permalink] New post 05 Dec 2007, 19:41
Thank you a million Gmattiger. Your explaination is very helpful!
Intern
Intern
avatar
Joined: 29 Jun 2011
Posts: 37
Followers: 0

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

Re: [#permalink] New post 02 Aug 2011, 04:58
goodglory wrote:
I am confused because 1/5 of a mile is 1.6.
1/5 of 8 miles is 1.6 and then there are 6.4 miles left?

I don't get it?!


I was stuck at the same place and took me more than a 20 mins to figure it out that the 1/5 is actually a 0.2 miles NOT 1.6 miles. If it is a 1.6 miles, if you try to add 1.6 five times, you won't be able to get 8miles..
Director
Director
avatar
Joined: 29 Nov 2012
Posts: 929
Followers: 12

Kudos [?]: 313 [0], given: 543

Re: A certain taxi company charges $3.10 for the first 1/5 of a [#permalink] New post 23 Feb 2013, 05:42
I don't understand the calculations for this problem I'm getting 3.12 when I calculate 7.8 * 0.4
_________________

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: 23408
Followers: 3611

Kudos [?]: 28888 [0], given: 2860

Re: A certain taxi company charges $3.10 for the first 1/5 of a [#permalink] New post 23 Feb 2013, 06:32
Expert's post
fozzzy wrote:
I don't understand the calculations for this problem I'm getting 3.12 when I calculate 7.8 * 0.4


A certain taxi company charges $3.10 for the first 1/5 of a mile plus $0.40 for each additional 1/5 of a mile. What would this company charge for a taxi ride that was 8 miles long?
A. 15.60
B. 16.00
C. 17.50
D. 18.70
E. 19.10

1/5 miles = 0.2 miles.

The cost of 8 miles long ride would be $3.10 for the first 0.2 miles plus (8-0.2)/0.2*0.4 = $3.1 + $15.6 = $18.7.

Answer: D.
_________________

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

Director
Director
avatar
Joined: 29 Nov 2012
Posts: 929
Followers: 12

Kudos [?]: 313 [0], given: 543

Re: A certain taxi company charges $3.10 for the first 1/5 of a [#permalink] New post 23 Feb 2013, 07:08
why are we dividing by 0.2?
_________________

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: 23408
Followers: 3611

Kudos [?]: 28888 [0], given: 2860

Re: A certain taxi company charges $3.10 for the first 1/5 of a [#permalink] New post 23 Feb 2013, 07:11
Expert's post
Intern
Intern
avatar
Joined: 16 Aug 2013
Posts: 4
Followers: 0

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

Re: [#permalink] New post 16 Aug 2013, 08:18
goodglory wrote:
I am confused because 1/5 of a mile is 1.6.
1/5 of 8 miles is 1.6 and then there are 6.4 miles left?

I don't get it?!

I just find the problem about the 1.6
in this question, it says 1/5 of a mile, not 1/5 mile of a mile
you see, that's why we do not need to use 8 mile divided by 1/5
Senior Manager
Senior Manager
avatar
Joined: 10 Jul 2013
Posts: 343
Followers: 3

Kudos [?]: 121 [0], given: 102

Re: A certain taxi company charges $3.10 for the first 1/5 of a [#permalink] New post 17 Aug 2013, 11:43
goodglory wrote:
A certain taxi company charges $3.10 for the first 1/5 of a mile plus $0.40 for each additional 1/5 of a mile. What would this company charge for a taxi ride that was 8 miles long?

A. 15.60
B. 16.00
C. 17.50
D. 18.70
E. 19.10

8-1/5 = 39/5

1/5 + 39/5 = 3.1 + 0.4 * 39 = 18.7 = (D) (Answer)
_________________

Asif vai.....

Re: A certain taxi company charges $3.10 for the first 1/5 of a   [#permalink] 17 Aug 2013, 11:43
    Similar topics Author Replies Last post
Similar
Topics:
5 Experts publish their posts in the topic A taxi company charges f cents for the first mile of the Bunuel 10 01 Oct 2012, 04:22
A taxi company charges f cents for the fi rst mile of the GMATD11 2 04 Jul 2011, 21:48
A certain NYC taxi driver has decided to start charging a dynamo 5 24 Dec 2007, 02:25
A certain NYC taxi driver has decided to start charging a alimad 3 20 Nov 2007, 06:27
A certain NYC taxi driver has decided to start charging a anonymousegmat 4 13 Aug 2007, 08:48
Display posts from previous: Sort by

A certain taxi company charges $3.10 for the first 1/5 of a

  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®.