GMAT Question of the Day - Daily to your Mailbox; hard ones only

 It is currently 18 Dec 2018, 18:04

### 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

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

## Events & Promotions

###### Events & Promotions in December
PrevNext
SuMoTuWeThFrSa
2526272829301
2345678
9101112131415
16171819202122
23242526272829
303112345
Open Detailed Calendar
• ### Happy Christmas 20% Sale! Math Revolution All-In-One Products!

December 20, 2018

December 20, 2018

10:00 PM PST

11:00 PM PST

This is the most inexpensive and attractive price in the market. Get the course now!
• ### Key Strategies to Master GMAT SC

December 22, 2018

December 22, 2018

07:00 AM PST

09:00 AM PST

Attend this webinar to learn how to leverage Meaning and Logic to solve the most challenging Sentence Correction Questions.

# A certain expressway has Exits J, K, L, and M, in that order

Author Message
TAGS:

### Hide Tags

Math Expert
Joined: 02 Sep 2009
Posts: 51280
A certain expressway has Exits J, K, L, and M, in that order  [#permalink]

### Show Tags

30 Jul 2012, 01:12
3
5
00:00

Difficulty:

15% (low)

Question Stats:

78% (01:18) correct 22% (01:12) wrong based on 927 sessions

### HideShow timer Statistics

The Official Guide for GMAT® Review, 13th Edition - Quantitative Questions Project

A certain expressway has Exits J, K, L, and M, in that order. What is the road distance from Exit K to Exit L ?

(1) The road distance from Exit J to Exit L is 21 kilometers.
(2) The road distance from Exit K to Exit M is 26 kilometers.

Practice Questions
Question: 6
Page: 275
Difficulty: 600

GMAT Club is introducing a new project: The Official Guide for GMAT® Review, 13th Edition - Quantitative Questions Project

Each week we'll be posting several questions from The Official Guide for GMAT® Review, 13th Edition and then after couple of days we'll provide Official Answer (OA) to them along with a slution.

We'll be glad if you participate in development of this project:
2. Please vote for the best solutions by pressing Kudos button;
3. Please vote for the questions themselves by pressing Kudos button;
4. Please share your views on difficulty level of the questions, so that we have most precise evaluation.

Thank you!

_________________
Math Expert
Joined: 02 Sep 2009
Posts: 51280
Re: A certain expressway has Exits J, K, L, and M, in that order  [#permalink]

### Show Tags

03 Aug 2012, 04:36
2
1
SOLUTION

A certain expressway has Exits J, K, L, and M, in that order. What is the road distance from Exit K to Exit L ?
Attachment:

JKLM.png [ 1.32 KiB | Viewed 11203 times ]

(1) The road distance from Exit J to Exit L is 21 kilometers. JL=21, so JK+KL=21. Not sufficient.
(2) The road distance from Exit K to Exit M is 26 kilometers. KM=26, so KL+LM=26. Not sufficient.

(1)+(2) We have two distinct linear equations with three unknowns, hence we cannot solve for any of them. Not sufficient.

_________________
Manager
Joined: 17 Jul 2010
Posts: 112

### Show Tags

25 Nov 2012, 13:27
A certain espressway has exits J,K,L, and M, in that order. What is the road distance from exit K to Exit L?

1. The road distance from exit J to Exit L is 21 KM

2. The road distance from exit K to exit M is 26 KM

Please give a brief shortcut/or thoughts as to how to eliminate possible answers.

Thanks!
Intern
Status: Edge of Extinction
Joined: 09 Sep 2012
Posts: 38

### Show Tags

25 Nov 2012, 15:20
J-K-L-M

We know the distance between J and L
We know the distance between K and M

Neither of these tells us anything about the distance between K and L -> A, B, D incorrect
The two statements put together allso tell us nothing about the distance between K and L -> C incorrect

E is correct

Look at this another way, taking a dash for 5 units, and approximating, you can diagram (I) and (II) together as:
J---K-L----M
OR
J--K--L---M
OR
J-K---L--M

Hence E

I don't have a simpler explanation, I'm afraid.
_________________

The only ability the GMAT is an indicator of...is the ability to do well on the GMAT.

Math Expert
Joined: 02 Sep 2009
Posts: 51280

### Show Tags

26 Nov 2012, 01:42
laythesmack23 wrote:
A certain espressway has exits J,K,L, and M, in that order. What is the road distance from exit K to Exit L?

1. The road distance from exit J to Exit L is 21 KM

2. The road distance from exit K to exit M is 26 KM

Please give a brief shortcut/or thoughts as to how to eliminate possible answers.

Thanks!

Merging similar topics. Please refer to the solutions above.
_________________
Intern
Joined: 24 May 2014
Posts: 13
Location: Brazil
Re: A certain expressway has Exits J, K, L, and M, in that order  [#permalink]

### Show Tags

02 Jul 2014, 19:41
Bunuel wrote:
SOLUTION

A certain expressway has Exits J, K, L, and M, in that order. What is the road distance from Exit K to Exit L ?
Attachment:
JKLM.png

(1) The road distance from Exit J to Exit L is 21 kilometers. JL=21, so JK+KL=21. Not sufficient.
(2) The road distance from Exit K to Exit M is 26 kilometers. KM=26, so KL+LM=26. Not sufficient.

(1)+(2) We have two distinct linear equations with three unknowns, hence we cannot solve for any of them. Not sufficient.

Can`t I say (1)+(2):

(1)JL + LM = 21+LM
(2)KM +KJ = 26 + KJ
(1)+(2) = 21+Lm = 26+KJ
LM-KJ = 5
so KL=5 ?
Math Expert
Joined: 02 Sep 2009
Posts: 51280
Re: A certain expressway has Exits J, K, L, and M, in that order  [#permalink]

### Show Tags

03 Jul 2014, 04:49
1
1
Reni wrote:
Bunuel wrote:
SOLUTION

A certain expressway has Exits J, K, L, and M, in that order. What is the road distance from Exit K to Exit L ?

(1) The road distance from Exit J to Exit L is 21 kilometers. JL=21, so JK+KL=21. Not sufficient.
(2) The road distance from Exit K to Exit M is 26 kilometers. KM=26, so KL+LM=26. Not sufficient.

(1)+(2) We have two distinct linear equations with three unknowns, hence we cannot solve for any of them. Not sufficient.

Can`t I say (1)+(2):

(1)JL + LM = 21+LM
(2)KM +KJ = 26 + KJ
(1)+(2) = 21+Lm = 26+KJ
LM-KJ = 5
so KL=5 ?

The point is that LM - KJ does NOT equal to KL.
_________________
Target Test Prep Representative
Affiliations: Target Test Prep
Joined: 04 Mar 2011
Posts: 2830
Re: A certain expressway has Exits J, K, L, and M, in that order  [#permalink]

### Show Tags

22 Jul 2016, 10:57
1
1
Bunuel wrote:
The Official Guide for GMAT® Review, 13th Edition - Quantitative Questions Project

A certain expressway has Exits J, K, L, and M, in that order. What is the road distance from Exit K to Exit L ?

(1) The road distance from Exit J to Exit L is 21 kilometers.
(2) The road distance from Exit K to Exit M is 26 kilometers.

Solution:

Let's first put the given information into a diagram. We can also define variables for the distances between J and K, K and L, and L and M.

Distance from J to K = x

Distance from K to L = y

Distance from L to M = z

We are asked to determine the road distance from Exit K to Exit L. Thus, we need to determine the value of y.

Statement One Alone:

The road distance from Exit J to Exit L is 21 kilometers.

Statement one tells us that x + y = 21.

This is not enough information to answer the question. Statement one alone is not sufficient. Eliminate answer choices A and D.

Statement Two Alone:

The road distance from Exit K to Exit M is 26 kilometers.

Statement two tells us that y + z = 26.

This is not enough information to answer the question. Statement two alone is not sufficient. Eliminate answer choice B.

Statements One and Two Together:

From statements one and two we know the following:

x + y = 21 and y + z = 26

Since this is not enough to determine the value of y, we cannot answer the question.

_________________

Jeffery Miller

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

Non-Human User
Joined: 09 Sep 2013
Posts: 9207
Re: A certain expressway has Exits J, K, L, and M, in that order  [#permalink]

### Show Tags

19 Jul 2018, 23:21
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.
_________________
Re: A certain expressway has Exits J, K, L, and M, in that order &nbs [#permalink] 19 Jul 2018, 23:21
Display posts from previous: Sort by