It is currently 20 Apr 2018, 15:14

### 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

# Events & Promotions

###### Events & Promotions in June
Open Detailed Calendar

# In the figure above, EF is parallel to the y axis. If AB=CD=EF and BC=

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

### Hide Tags

Math Expert
Joined: 02 Sep 2009
Posts: 44588
In the figure above, EF is parallel to the y axis. If AB=CD=EF and BC= [#permalink]

### Show Tags

18 Sep 2016, 10:16
1
This post received
KUDOS
Expert's post
5
This post was
BOOKMARKED
00:00

Difficulty:

55% (hard)

Question Stats:

61% (01:07) correct 39% (01:17) wrong based on 137 sessions

### HideShow timer Statistics

In the figure above, EF is parallel to the y axis. If AB=CD=EF and BC=DE and the coordinates of point A are (10,3), what are the coordinates of point F?

(1) The coordinates of point D are (7,3).

(2) The coordinates of point C are (7,−1).

[Reveal] Spoiler:
Attachment:

T6136.png [ 4.65 KiB | Viewed 1252 times ]
[Reveal] Spoiler: OA

_________________
Manager
Joined: 05 Jun 2015
Posts: 84
Location: United States
WE: Engineering (Transportation)
Re: In the figure above, EF is parallel to the y axis. If AB=CD=EF and BC= [#permalink]

### Show Tags

18 Sep 2016, 18:04
1) co-ordinates of D are (7,3)
=> BC = 3 = DE;
co-ordinates of E are (4,3)
length AB is not known, hence y co-ordinate of F is not known.
Not sufficient.

2) Given C (7,-1);
BC = 3 = DE
F = (4,-1)
2 is sufficient.

Option B
Manager
Joined: 28 Jun 2016
Posts: 207
Location: Canada
Concentration: Operations, Entrepreneurship
Re: In the figure above, EF is parallel to the y axis. If AB=CD=EF and BC= [#permalink]

### Show Tags

19 Sep 2016, 03:50
How did you get BC= 3 from statement 2??

Sent from my iPhone using GMAT Club Forum mobile app
Board of Directors
Status: Stepping into my 10 years long dream
Joined: 18 Jul 2015
Posts: 3345
Re: In the figure above, EF is parallel to the y axis. If AB=CD=EF and BC= [#permalink]

### Show Tags

20 Sep 2016, 10:18
1
This post received
KUDOS
acegmat123 wrote:
How did you get BC= 3 from statement 2??

Sent from my iPhone using GMAT Club Forum mobile app

X-coordinate of B is 10 and that of C is 7. Y coordinate of both B and C is same.

So, the distance between B and C will be the difference between their x - coordinates = 10-7 = 3

or if still not clear use the distance formula which is $$sqrt((difference between x coordinate)^2 + ( difference between y cooridante ) ^2 )$$.

Hence, B is sufficient.
_________________

How I improved from V21 to V40! ?

How to use this forum in THE BEST way?

Manager
Joined: 24 Oct 2013
Posts: 152
Location: India
Concentration: General Management, Strategy
WE: Information Technology (Computer Software)
Re: In the figure above, EF is parallel to the y axis. If AB=CD=EF and BC= [#permalink]

### Show Tags

21 Sep 2016, 04:11
B it is
Only B gives the coordinates of -ve y axis and a and C points combined together gives the equal distances of x axis .
Intern
Joined: 28 Mar 2018
Posts: 45
Re: In the figure above, EF is parallel to the y axis. If AB=CD=EF and BC= [#permalink]

### Show Tags

05 Apr 2018, 12:41
Not sure if I’m looking at this the right way, but I imagined that I was making right triangles on the diagram. If I know the point C I would know AB and CB because of the change in horizontal/vertical axis. If know that and I know that EF=AB and DE=BC I should be able to find point F. Point D would let me find the horizontal length of the horizontal lines, but I’d have no way of knowing the Y axis changes
Re: In the figure above, EF is parallel to the y axis. If AB=CD=EF and BC=   [#permalink] 05 Apr 2018, 12:41
Display posts from previous: Sort by

# In the figure above, EF is parallel to the y axis. If AB=CD=EF and BC=

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

 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®.