Author Message
TAGS:

### Hide Tags

Intern
Joined: 18 Nov 2007
Posts: 9
Followers: 0

Kudos [?]: 17 [2] , given: 0

A certain taxi company charges $3.10 for the first 1/5 of a [#permalink] ### Show Tags 04 Dec 2007, 19:37 2 This post received KUDOS 13 This post was BOOKMARKED 00:00 Difficulty: 15% (low) Question Stats: 78% (02:01) correct 22% (01:30) wrong based on 331 sessions ### HideShow timer Statistics 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 CEO Joined: 29 Mar 2007 Posts: 2583 Followers: 19 Kudos [?]: 420 [0], given: 0 Re: Taxi Company PLEASE HELP [#permalink] ### Show Tags 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
SVP
Joined: 29 Aug 2007
Posts: 2492
Followers: 67

Kudos [?]: 734 [0], given: 19

### Show Tags

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 Joined: 18 Nov 2007 Posts: 9 Followers: 0 Kudos [?]: 17 [0], given: 0 ### Show Tags 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?! Director Joined: 09 Aug 2006 Posts: 763 Followers: 1 Kudos [?]: 192 [4] , given: 0 Re: Taxi Company PLEASE HELP [#permalink] ### Show Tags 04 Dec 2007, 20:59 4 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
SVP
Joined: 04 May 2006
Posts: 1926
Schools: CBS, Kellogg
Followers: 22

Kudos [?]: 1011 [0], given: 1

### Show Tags

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, SVP Joined: 29 Aug 2007 Posts: 2492 Followers: 67 Kudos [?]: 734 [0], given: 19 Re: Taxi Company PLEASE HELP [#permalink] ### Show Tags 05 Dec 2007, 16:52 1 This post was BOOKMARKED 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
Joined: 12 Jul 2007
Posts: 862
Followers: 15

Kudos [?]: 286 [0], given: 0

### Show Tags

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
Joined: 04 May 2006
Posts: 1926
Schools: CBS, Kellogg
Followers: 22

Kudos [?]: 1011 [0], given: 1

### Show Tags

05 Dec 2007, 19:41
Intern
Joined: 29 Jun 2011
Posts: 36
Followers: 0

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

### Show Tags

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
Joined: 29 Nov 2012
Posts: 898
Followers: 14

Kudos [?]: 1044 [0], given: 543

### Show Tags

23 Feb 2013, 06:32
Expert's post
1
This post was
BOOKMARKED
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.

_________________
Director
Joined: 29 Nov 2012
Posts: 898
Followers: 14

Kudos [?]: 1044 [0], given: 543

### Show Tags

23 Feb 2013, 07:11
fozzzy wrote:
why are we dividing by 0.2?

### Show Tags

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.....

GMAT Club Legend
Joined: 09 Sep 2013
Posts: 13435
Followers: 575

Kudos [?]: 163 [0], given: 0

### Show Tags

12 Nov 2016, 17:49
Hello from the GMAT Club BumpBot!

Thanks to another GMAT Club member, I have just discovered this valuable topic, yet it had no discussion for over a year. I am now bumping it up - doing my job. I think you may find it valuable (esp those replies with Kudos).

Want to see all other topics I dig out? Follow me (click follow button on profile). You will receive a summary of all topics I bump in your profile area as well as via email.
_________________
Math Forum Moderator
Status: QA & VA Forum Moderator
Joined: 11 Jun 2011
Posts: 2301
Location: India
GPA: 3.5
Followers: 92

Kudos [?]: 633 [0], given: 317

Re: A certain taxi company charges $3.10 for the first 1/5 of a [#permalink] ### Show Tags 13 Nov 2016, 23:27 goodglory wrote: A certain taxi company charges$3.10 for the first 1/5 of a mile plus $0.40 for each additional 1/5 of a mile. What would this company charge for a taxi ride that was 8 miles long? A. 15.60 B. 16.00 C. 17.50 D. 18.70 E. 19.10 8 Miles = 40 parts... ( Each mile = 1/5 mile ) Charges for 1st part =$ 3.10

Charges for 39 reamaining part = 0.40 * 39 = 15.60

So, Total charges for 8 miles ( ie, 40 parts ) is 18.70 ( ie, 3.10 + 15.60 )

_________________

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 )

Senior Manager
Affiliations: Target Test Prep
Joined: 04 Mar 2011
Posts: 458
Followers: 22

Kudos [?]: 187 [0], given: 2

Re: A certain taxi company charges $3.10 for the first 1/5 of a [#permalink] ### Show Tags 16 Nov 2016, 08:00 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 We know that for the first 1/5 mile of the 8-mile trip, the taxi company charges$3.10. For the next 7 4/5 miles, each 1/5 of a mile will cost $0.40. We need to find out how many 1/5s are in 7 4/5. Since 7 4/5 = 39/5, there are 39 1/5s in 7 4/5. Therefore, the total cost of the 8-mile trip would be:$3.10 + 39($0.40)$3.10 + $15.60$18.70

_________________

Jeffrey Miller
Jeffrey Miller

Re: A certain taxi company charges $3.10 for the first 1/5 of a [#permalink] 16 Nov 2016, 08:00 Similar topics Replies Last post Similar Topics: 1 If a taxi driver charges x cents for the first quarter-mile of a trip 7 22 Jan 2015, 06:46 1 A taxi company charges$1.75 for the first quarter of a mile and fifte 9 24 Dec 2014, 07:52
9 An auction house charges a commission of 15% on the first 7 28 May 2012, 18:37