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

It is currently 16 Sep 2014, 07:55

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

In a certain state, gasoline stations compute the price per

  Question banks Downloads My Bookmarks Reviews Important topics  
Author Message
TAGS:
Director
Director
avatar
Joined: 01 May 2007
Posts: 795
Followers: 1

Kudos [?]: 66 [0], given: 0

GMAT Tests User
In a certain state, gasoline stations compute the price per [#permalink] New post 15 Apr 2008, 14:21
00:00
A
B
C
D
E

Difficulty:

  35% (medium)

Question Stats:

76% (01:54) correct 24% (02:06) wrong based on 57 sessions
In a certain state, gasoline stations compute the price per gallon "p", in dollars, charged at the pump by adding a 4 percent sales tax to the dealer's price per gallon "d", in dollars, and then adding a gasoline tax of $0.18 per gallon. Which of the following gives the dealer's price per gallon "d" in terms of the price per gallon "p" charged at the pump?

A. d=p-0.22
B. d=p/1.22
C. d=p/1.04 - 0.18
D. d= p-0.18/1.04
E. d = p-0.04/1.18

OPEN DISCUSSION OF THIS QUESTION IS HERE: in-a-certain-state-gasoline-stations-compute-the-price-per-100598.html#p776714
[Reveal] Spoiler: OA

Last edited by Bunuel on 10 Dec 2013, 05:28, edited 1 time in total.
Edited the question and added the OA.
Kaplan GMAT Prep Discount CodesKnewton GMAT Discount CodesVeritas Prep GMAT Discount Codes
Current Student
User avatar
Joined: 27 Mar 2008
Posts: 416
Schools: Kellogg Class of 2011
Followers: 1

Kudos [?]: 38 [0], given: 1

GMAT Tests User
Re: GMATPrep PS: Can you solve it fast somehow? [#permalink] New post 15 Apr 2008, 14:29
p = d*1.04 + 18 (Based on the question. 4% Sales Tax +0.18 cents per gallon)

Rearranging,

d = (p-0.18)/1.04

Answer is D
Manager
Manager
User avatar
Joined: 12 Jan 2013
Posts: 249
Followers: 0

Kudos [?]: 20 [0], given: 47

GMAT ToolKit User
Re: GMATPrep PS: Can you solve it fast somehow? [#permalink] New post 10 Dec 2013, 05:24
yellowjacket wrote:
p = d*1.04 + 18 (Based on the question. 4% Sales Tax +0.18 cents per gallon)

Rearranging,

d = (p-0.18)/1.04

Answer is D




How is the bolded part even true? Doesn't the question really say: p/gallon = d*1.04 + 18/gallon

Thus, how can you "remove" the fractions p/gallon and 1/gallon from both sides without multiplying gallon with d*1.04? What am I missing?

Because I easily understand the question when it is done as you say, but logically I just cannot seem to understand WHY the fraction /gallon is not included in your equation.
Expert Post
Math Expert
User avatar
Joined: 02 Sep 2009
Posts: 29641
Followers: 3488

Kudos [?]: 26202 [0], given: 2706

Re: GMATPrep PS: Can you solve it fast somehow? [#permalink] New post 10 Dec 2013, 05:28
Expert's post
aeglorre wrote:
yellowjacket wrote:
p = d*1.04 + 18 (Based on the question. 4% Sales Tax +0.18 cents per gallon)

Rearranging,

d = (p-0.18)/1.04

Answer is D




How is the bolded part even true? Doesn't the question really say: p/gallon = d*1.04 + 18/gallon

Thus, how can you "remove" the fractions p/gallon and 1/gallon from both sides without multiplying gallon with d*1.04? What am I missing?

Because I easily understand the question when it is done as you say, but logically I just cannot seem to understand WHY the fraction /gallon is not included in your equation.


In a certain state, gasoline stations compute the price per gallon "p", in dollars, charged at the pump by adding a 4 percent sales tax to the dealer's price per gallon "d", in dollars, and then adding a gasoline tax of $0.18 per gallon. Which of the following gives the dealer's price per gallon "d" in terms of the price per gallon "p" charged at the pump?

A. d=p-0.22
B. d=p/1.22
C. d=p/1.04 - 0.18
D. d= p-0.18/1.04
E. d = p-0.04/1.18

Price per gallon p equals to d+0.04d (dealer's price d plus 4%) plus 0.18, so p=d+0.04d+0.18 --> p=1.04d+0.18 --> d=\frac{p-0.18}{1.04}.

Answer: D.

OPEN DISCUSSION OF THIS QUESTION IS HERE: in-a-certain-state-gasoline-stations-compute-the-price-per-100598.html#p776714
_________________

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: GMATPrep PS: Can you solve it fast somehow?   [#permalink] 10 Dec 2013, 05:28
    Similar topics Author Replies Last post
Similar
Topics:
Experts publish their posts in the topic In a certain state, gasoline stations compute the price per aiming4mba 5 07 Sep 2010, 12:36
3 computer work stations and low prices icandy 16 03 Feb 2009, 11:08
In a certain state, gasoline stations compute the price per redbeanaddict 1 12 Oct 2008, 21:25
Roughly: Gas stations compute price per gallon (p) by adding uphillclimb 2 14 Oct 2006, 11:52
In a certain state, gasoline stations compute the price per getzgetzu 1 03 Apr 2006, 03:05
Display posts from previous: Sort by

In a certain state, gasoline stations compute the price per

  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®.