GMAT Changed on April 16th - Read about the latest changes here

It is currently 27 May 2018, 06:50

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

Events & Promotions in June
Open Detailed Calendar

A car traveled 462 miles per tankful of gasoline on the

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

Hide Tags

8 KUDOS received
Manager
Manager
avatar
Joined: 05 Sep 2007
Posts: 144
Location: New York
A car traveled 462 miles per tankful of gasoline on the [#permalink]

Show Tags

New post Updated on: 03 Dec 2013, 07:23
8
This post received
KUDOS
12
This post was
BOOKMARKED
00:00
A
B
C
D
E

Difficulty:

  75% (hard)

Question Stats:

63% (01:59) correct 37% (02:21) wrong based on 478 sessions

HideShow timer Statistics

A car traveled 462 miles per tankful of gasoline on the highway and 336 miles per tankful of gasoline in the city. If the car traveled 6 fewer miles per gallon in the city than on the highway, how many miles per gallon did the car travel in the city?

(A) 14
(B) 16
(C) 21
(D) 22
(E) 27

Originally posted by el1981 on 24 Mar 2008, 17:59.
Last edited by Bunuel on 03 Dec 2013, 07:23, edited 1 time in total.
Added the OA.
6 KUDOS received
Director
Director
avatar
Joined: 10 Sep 2007
Posts: 916
Re: PS:gasoline [#permalink]

Show Tags

New post 24 Mar 2008, 18:41
6
This post received
KUDOS
3
This post was
BOOKMARKED
Let the speed in highway be h mpg and in city be c mpg.
h = c+6

h miles are covered in 1 gallon
462 miles will be covered in 462/h.

Similarly c miles are covered in 1 gallon
336 miles will be covered in 336/c.

Both should be same (as car's fuel capacity does not change with speed)
=> 336/c = 462/h
=> 336/c = 462/(c+6)
=> 336c+336*6=462c
=>c=336*6/126=16

Answer B.
8 KUDOS received
Senior Manager
Senior Manager
avatar
Joined: 15 Aug 2007
Posts: 252
Schools: Chicago Booth
Re: PS:gasoline [#permalink]

Show Tags

New post 24 Mar 2008, 22:17
8
This post received
KUDOS
3
This post was
BOOKMARKED
B-16

car traveled additional 462-336=126 miles on highway because it got 6 miles/gallon additional mileage. So it consumed 126/6=21 gallons.

car mileage in city = 336/21 = 16 miles/gallon (same amount of gallons are were used on highway and in the city)
1 KUDOS received
VP
VP
avatar
Joined: 28 Dec 2005
Posts: 1487
Re: PS:gasoline [#permalink]

Show Tags

New post 25 Mar 2008, 16:55
1
This post received
KUDOS
mpg(c) = 336/m

mpg(h) = 462/m

336/m=462/m - (6)

solve for m to get m=21. plug back into 336/21 to get 16
3 KUDOS received
Current Student
User avatar
Joined: 06 Sep 2013
Posts: 1891
Concentration: Finance
GMAT ToolKit User
Re: A car traveled 462 miles per tankful of gasoline on the [#permalink]

Show Tags

New post 03 Dec 2013, 06:19
3
This post received
KUDOS
3
This post was
BOOKMARKED
el1981 wrote:
A car traveled 462 miles per tankful of gasoline on the highway and 336 miles per tankful of gasoline in the city. If the car traveled 6 fewer miles per gallon in the city than on the highway, how many miles per gallon did the car travel in the city?
(A) 14
(B) 16
(C) 21
(D) 22
(E) 27


Let x be a tankful of gas

462/x - 336/x = 6

462-336 = 6x
x = 21

So a tankful of gas contains 21 gallons

Then in the city miles per gallon will be
336/21 = 16

Answer is B

Hope its clear
Cheers
J :)
Expert Post
Math Expert
User avatar
V
Joined: 02 Sep 2009
Posts: 45458
Re: A car traveled 462 miles per tankful of gasoline on the [#permalink]

Show Tags

New post 03 Dec 2013, 07:23
el1981 wrote:
A car traveled 462 miles per tankful of gasoline on the highway and 336 miles per tankful of gasoline in the city. If the car traveled 6 fewer miles per gallon in the city than on the highway, how many miles per gallon did the car travel in the city?

(A) 14
(B) 16
(C) 21
(D) 22
(E) 27


Similar question to practice: a-certain-car-averages-25-miles-per-gallon-of-gasoline-when-128139.html
_________________

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
User avatar
Joined: 05 Jun 2012
Posts: 90
Schools: IIMA
GMAT ToolKit User
Re: A car traveled 462 miles per tankful of gasoline on the [#permalink]

Show Tags

New post 16 Apr 2014, 01:03
Distance traveled in highway=distance traveled in city +6 (As given in question)

suppose measurement of gallon is x.

462/x=336/x+6; x=21

As question as asking about per gallon in city so =336/21=16
_________________

If you are not over prepared then you are under prepared !!!

Expert Post
3 KUDOS received
SVP
SVP
User avatar
P
Joined: 08 Jul 2010
Posts: 2099
Location: India
GMAT: INSIGHT
WE: Education (Education)
Reviews Badge
A car traveled 462 miles per tankful of gasoline on the [#permalink]

Show Tags

New post 13 Jun 2015, 01:08
3
This post received
KUDOS
Expert's post
el1981 wrote:
A car traveled 462 miles per tankful of gasoline on the highway and 336 miles per tankful of gasoline in the city. If the car traveled 6 fewer miles per gallon in the city than on the highway, how many miles per gallon did the car travel in the city?

(A) 14
(B) 16
(C) 21
(D) 22
(E) 27


Solution without making complex Algebraic equations

462 miles per tankful of gasoline on the highway and 336 miles per tankful of gasoline in the city.

i.e. Difference of Miles per tankful of gasoline = 462 - 336 = 126 miles


Given : 6 fewer miles per gallon in the city than on the highway

i.e. Difference of 6 miles comes in one gallon when car travels on Highway and in City
so Difference of 126 miles will come in = 126/6 = 21 gallons


i.e. Car travels 336 miles in 21 gallons in City

i.e. Mileage of car in City = 336/21 = 16 Miles per gallon


Answer: Option
_________________

Prosper!!!
GMATinsight
Bhoopendra Singh and Dr.Sushma Jha
e-mail: info@GMATinsight.com I Call us : +91-9999687183 / 9891333772
Online One-on-One Skype based classes and Classroom Coaching in South and West Delhi
http://www.GMATinsight.com/testimonials.html

22 ONLINE FREE (FULL LENGTH) GMAT CAT (PRACTICE TESTS) LINK COLLECTION

Manager
Manager
avatar
B
Joined: 17 Aug 2015
Posts: 102
GMAT ToolKit User
Re: A car traveled 462 miles per tankful of gasoline on the [#permalink]

Show Tags

New post 03 Sep 2016, 09:55
let x be the tank capacity
mileage in hwy: 462/x
mileage in cty: 336/x
now the relationship between the two
462/x=336/x+6,
solve x = 126/6 = 21.
mileage in cty = 336/21 = 16
--------------------------------------------
another way :- equate the tank of gas:
tank of gas = miles travelled/mileage
336/c = 436/(c+6)
solve c = 16
Director
Director
avatar
G
Joined: 07 Dec 2014
Posts: 999
A car traveled 462 miles per tankful of gasoline on the [#permalink]

Show Tags

New post 03 Sep 2016, 11:55
A car traveled 462 miles per tankful of gasoline on the highway and 336 miles per tankful of gasoline in the city. If the car traveled 6 fewer miles per gallon in the city than on the highway, how many miles per gallon did the car travel in the city?


336/462=56/77
let x=city mpg
x/(x+6)=56/77
x=16 mpg
Intern
Intern
avatar
B
Joined: 20 Sep 2015
Posts: 22
Re: A car traveled 462 miles per tankful of gasoline on the [#permalink]

Show Tags

New post 22 Oct 2017, 07:38
462 on H
336 in C

and -6m/g in city
So the difference is
462-336= 126 miles

Capacity of the fuel tank: 126/6 = 21g
So m/g in the city = 336/21
= 16 (B)
_________________

Pawn

Expert Post
EMPOWERgmat Instructor
User avatar
D
Status: GMAT Assassin/Co-Founder
Affiliations: EMPOWERgmat
Joined: 19 Dec 2014
Posts: 11674
Location: United States (CA)
GMAT 1: 800 Q51 V49
GRE 1: 340 Q170 V170
Re: A car traveled 462 miles per tankful of gasoline on the [#permalink]

Show Tags

New post 06 Mar 2018, 13:20
Hi All,

This question is perfect for TESTing THE ANSWERS (we're looking for an answer that divides evenly into 336 AND - when you add 6 to it - evenly divides into 462. How long would it take you to do the necessary division to find that answer?). The "math" approach to this prompt can actually be done in a number of ways, depending on how you want to set up the algebra. Here's another way:

Since a "tankful" of gasoline is the same number of gallons of gas whether driving on the highway or driving in the city, we can use a variation of the Distance Formula to create 2 equations:

462 = H(G) where H = miles/gallon on the highway and G = # of gallons

336 = C(G) where C = miles/gallon in the city and G = # of gallons

Right now, we have 3 variables and 2 equations. The last sentence gives us one more equation to work with: "the car traveled 6 fewer miles per gallon in the city than on the highway." This translates into:

C = H - 6

So now we have a "system" of equations (3 variables and 3 unique equations means that we CAN solve for all 3 variables). We're trying to solve for C…..

462 = H(G)
336 = C(G)
C = H - 6

H = C + 6 plug this into the first equation….

462 = (C+6)(G)
462 = CG + 6G

336 = CG plug this into the prior equation….

462 = 336 + 6G
126 = 6G
21 = G

**REMINDER: This is the value of G. We want the value of C.**

Plug G=21 into 336 = CG

336 = C(21)
16 = C

Final Answer:

GMAT assassins aren't born, they're made,
Rich
_________________

760+: Learn What GMAT Assassins Do to Score at the Highest Levels
Contact Rich at: Rich.C@empowergmat.com

Rich Cohen

Co-Founder & GMAT Assassin

Special Offer: Save $75 + GMAT Club Tests Free
  Official GMAT Exam Packs + 70 Pt. Improvement Guarantee
www.empowergmat.com/

***********************Select EMPOWERgmat Courses now include ALL 6 Official GMAC CATs!***********************

Intern
Intern
avatar
B
Joined: 03 Dec 2017
Posts: 20
Re: A car traveled 462 miles per tankful of gasoline on the [#permalink]

Show Tags

New post 09 Mar 2018, 03:58
Let the tank be --> x gallons.

We know that: With (x) gallons --> the car traveled 462 miles. Hence ... we want to know HOW many miles / gallon did it travel? Easy ...--> x (full) = 462 then 1 gallon = y(miles)
We apply the same for the city and we got:

(336 / x) = (462 / x) - 6 , for the prolem says that the car traveled 6 fewer miles per gallon in the ciity than on the highway.

We solve for x! We find x and then we go to (336/x) = 336/21 = 16 miles per gallon in the city.

Cheers!
VP
VP
User avatar
P
Status: Learning
Joined: 20 Dec 2015
Posts: 1150
Location: India
Concentration: Operations, Marketing
GMAT 1: 670 Q48 V36
GRE 1: 314 Q157 V157
GPA: 3.4
WE: Manufacturing and Production (Manufacturing)
CAT Tests
A car traveled 462 miles per tankful of gasoline on the [#permalink]

Show Tags

New post 09 Mar 2018, 06:39
el1981 wrote:
A car traveled 462 miles per tankful of gasoline on the highway and 336 miles per tankful of gasoline in the city. If the car traveled 6 fewer miles per gallon in the city than on the highway, how many miles per gallon did the car travel in the city?

(A) 14
(B) 16
(C) 21
(D) 22
(E) 27


Imo B
Well this is not a tough question but the wording makes it tough to understand .Basically we have to find total number of gallons and then find rate in city B
Let x miles per galoon
Then from question stem we have 462-336=6*x
now 126=6x or x=21
miles traveled per gallon in city =336/21=16 miles per gallon
_________________

Please give kudos if you found my answers useful

Director
Director
avatar
G
Joined: 07 Dec 2014
Posts: 999
Re: A car traveled 462 miles per tankful of gasoline on the [#permalink]

Show Tags

New post 09 Mar 2018, 11:15
el1981 wrote:
A car traveled 462 miles per tankful of gasoline on the highway and 336 miles per tankful of gasoline in the city. If the car traveled 6 fewer miles per gallon in the city than on the highway, how many miles per gallon did the car travel in the city?

(A) 14
(B) 16
(C) 21
(D) 22
(E) 27


let g=gallons per tank
462/g-336/g=6
→g=21 gallons per tank
336/21=16 city miles per gallon
B
Expert Post
Target Test Prep Representative
User avatar
G
Status: Head GMAT Instructor
Affiliations: Target Test Prep
Joined: 04 Mar 2011
Posts: 2442
Re: A car traveled 462 miles per tankful of gasoline on the [#permalink]

Show Tags

New post 12 Mar 2018, 16:24
el1981 wrote:
A car traveled 462 miles per tankful of gasoline on the highway and 336 miles per tankful of gasoline in the city. If the car traveled 6 fewer miles per gallon in the city than on the highway, how many miles per gallon did the car travel in the city?

(A) 14
(B) 16
(C) 21
(D) 22
(E) 27


We can create the proportion in which x = miles per gallon on the highway and (x - 6) = miles per gallon in the city.

(x - 6)/336 = x/462

462x - 2,772 = 336x

126x = 2,772

x = 22

So city mpg = 22 - 6 = 16 mpg.

Answer: B
_________________

Jeffery Miller
Head of GMAT Instruction

GMAT Quant Self-Study Course
500+ lessons 3000+ practice problems 800+ HD solutions

Re: A car traveled 462 miles per tankful of gasoline on the   [#permalink] 12 Mar 2018, 16:24
Display posts from previous: Sort by

A car traveled 462 miles per tankful of gasoline on the

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


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®.