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

It is currently 23 Jun 2018, 14:20

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

In the figure shown, lines k and m are parallel to each other. Is x = z

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

Hide Tags

3 KUDOS received
Verbal Forum Moderator
avatar
Joined: 15 Apr 2013
Posts: 190
Location: India
Concentration: General Management, Marketing
GMAT Date: 11-23-2015
GPA: 3.6
WE: Science (Other)
GMAT ToolKit User Premium Member Reviews Badge
In the figure shown, lines k and m are parallel to each other. Is x = z [#permalink]

Show Tags

New post Updated on: 18 Jul 2015, 01:43
3
8
00:00
A
B
C
D
E

Difficulty:

  15% (low)

Question Stats:

79% (01:07) correct 21% (01:15) wrong based on 485 sessions

HideShow timer Statistics

Image
In the figure shown, lines k and m are parallel to each other. Is x = z ?

(1) x = w
(2) y = 180 - w

Attachment:
Untitled.png
Untitled.png [ 4.72 KiB | Viewed 6813 times ]

Originally posted by WillGetIt on 17 Jul 2015, 21:15.
Last edited by Bunuel on 18 Jul 2015, 01:43, edited 1 time in total.
Renamed the topic and edited the question.
Expert Post
Math Expert
User avatar
V
Joined: 02 Aug 2009
Posts: 5938
Re: In the figure shown, lines k and m are parallel to each other. Is x = z [#permalink]

Show Tags

New post 17 Jul 2015, 21:54
WillGetIt wrote:
In the figure shown, lines k and m are parallel to each other. Is x = z ?

(1) X=W
(2) y = 180 —w


1) statement one tells us that X=W..
but W=Z since both are alternate angles between two llel lines.. suff

2) y=180-w... also y=180-x as y and x are supplementary angles.. so w=x , same info as statement 1... suff
D Ans
_________________

Absolute modulus :http://gmatclub.com/forum/absolute-modulus-a-better-understanding-210849.html#p1622372
Combination of similar and dissimilar things : http://gmatclub.com/forum/topic215915.html


GMAT online Tutor

1 KUDOS received
Manager
Manager
User avatar
G
Joined: 22 Nov 2016
Posts: 236
Location: United States
Concentration: Leadership, Strategy
GPA: 3.4
Reviews Badge
Re: In the figure shown, lines k and m are parallel to each other. Is x = z [#permalink]

Show Tags

New post 03 Jul 2017, 09:10
1
I made a mistake by discarding second statement since it did not provide any new information. Duh.
Answer is D
_________________

Kudosity killed the cat but your kudos can save it.

Senior Manager
Senior Manager
User avatar
S
Joined: 08 Dec 2015
Posts: 304
GMAT 1: 600 Q44 V27
Reviews Badge
Re: In the figure shown, lines k and m are parallel to each other. Is x = z [#permalink]

Show Tags

New post 13 Jul 2017, 09:00
Guys can you tell me where can learn the angles stuff?
Expert Post
1 KUDOS received
Math Expert
User avatar
V
Joined: 02 Sep 2009
Posts: 46297
Re: In the figure shown, lines k and m are parallel to each other. Is x = z [#permalink]

Show Tags

New post 13 Jul 2017, 10:05
1
8
iliavko wrote:
Guys can you tell me where can learn the angles stuff?


23. Geometry




24. Coordinate Geometry




25. Triangles




26. Polygons




27. Circles




28. Rectangular Solids and Cylinders



_________________

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

Director
Director
User avatar
P
Joined: 13 Mar 2017
Posts: 610
Location: India
Concentration: General Management, Entrepreneurship
GPA: 3.8
WE: Engineering (Energy and Utilities)
Re: In the figure shown, lines k and m are parallel to each other. Is x = z [#permalink]

Show Tags

New post 14 Jul 2017, 00:23
1
WillGetIt wrote:
Image
In the figure shown, lines k and m are parallel to each other. Is x = z ?

(1) x = w
(2) y = 180 - w

Attachment:
Untitled.png


Given : Figure in which k || m
DS : x = z ?
From figure, y = 180 -x

Option 1 : x = w
SO sum of all angles of a quadrilateral = 360
-> y + w +(180 -z) + x(alternate angle) = 360
-> 180 -x + x + 180 - z + x = 360
-> x = z
SUFFICIENT

Option 2 : Y = 180 - w = 180 - x
-> x = w which is smae as option 1
SUFFICIENT

Answer D
_________________

CAT 99th percentiler : VA 97.27 | DI-LR 96.84 | QA 98.04 | OA 98.95
UPSC Aspirants : Get my app UPSC Important News Reader from Play store.

MBA Social Network : WebMaggu


Appreciate by Clicking +1 Kudos ( Lets be more generous friends.)



What I believe is : "Nothing is Impossible, Even Impossible says I'm Possible" : "Stay Hungry, Stay Foolish".

Expert Post
Top Contributor
2 KUDOS received
CEO
CEO
User avatar
P
Joined: 12 Sep 2015
Posts: 2579
Location: Canada
In the figure shown, lines k and m are parallel to each other. Is x = z [#permalink]

Show Tags

New post 16 Sep 2017, 16:10
2
Top Contributor
WillGetIt wrote:
Image
In the figure shown, lines k and m are parallel to each other. Is x = z ?

(1) x = w
(2) y = 180 - w

Attachment:
Untitled.png


Target question: Is x = z ?
Before we examine the statements, let's first recognize that, since k||m, we can conclude that angles w and z are EQUAL
Image

Okay, now onto the statements

Statement 1: x = w
We already learned that w = z
Statement 1 tells us that w = x
Since x and z are both equal to w, it must also be true that x = z
Since we can answer the target question with certainty, statement 1 is SUFFICIENT

Statement 2: y = 180 - w
We can also REPHRASE this as y + w = 180
Since w = z, we can also replace w with z in the above equation to get: y + z = 180
In the diagram, we can see that since angles y and x are on the same line, then y + x = 180
Since both equations are set equal to 180, we can also write: y + z = y + x
From here, we can subtract y from both sides to get z = x
Since we can answer the target question with certainty, statement 2 is SUFFICIENT

Answer:

RELATED VIDEO FROM OUR COURSE

_________________

Brent Hanneson – Founder of gmatprepnow.com

Image

In the figure shown, lines k and m are parallel to each other. Is x = z   [#permalink] 16 Sep 2017, 16:10
Display posts from previous: Sort by

In the figure shown, lines k and m are parallel to each other. Is x = z

  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®.