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

It is currently 23 Oct 2019, 13:54

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

What is the perimeter of a square chessboard, if a chessboard is made

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

Hide Tags

Find Similar Topics 
Math Expert
User avatar
V
Joined: 02 Sep 2009
Posts: 58464
What is the perimeter of a square chessboard, if a chessboard is made  [#permalink]

Show Tags

New post 29 Aug 2018, 02:39
00:00
A
B
C
D
E

Difficulty:

  15% (low)

Question Stats:

96% (01:08) correct 4% (00:13) wrong based on 31 sessions

HideShow timer Statistics

Director
Director
User avatar
G
Joined: 20 Feb 2015
Posts: 756
Concentration: Strategy, General Management
Re: What is the perimeter of a square chessboard, if a chessboard is made  [#permalink]

Show Tags

New post 29 Aug 2018, 02:51
Bunuel wrote:
What is the perimeter of a square chessboard, if a chessboard is made of 8 rows of 8 equal squares?

(1) The sum of the perimeters of all 64 squares on the board is 320 units.
(2) The perimeter of a single square is 5 units.


(1) The sum of the perimeters of all 64 squares on the board is 320 units.
Let the perimeter of the larger square be 4A and smaller square be 4a
now
n*4a = 320
a = 320/64*4 = 5/4

A= 8*5/4 = 10
perimeter of the larger sq = 40
sufficient

(2) The perimeter of a single square is 5 units.
4a=5
a=5/4

sufficient

D
Senior Manager
Senior Manager
User avatar
S
Joined: 07 Oct 2017
Posts: 252
Re: What is the perimeter of a square chessboard, if a chessboard is made  [#permalink]

Show Tags

New post 29 Aug 2018, 03:01
Bunuel wrote:
What is the perimeter of a square chessboard, if a chessboard is made of 8 rows of 8 equal squares?

(1) The sum of the perimeters of all 64 squares on the board is 320 units.
(2) The perimeter of a single square is 5 units.
We have a restricted figure with pre defined square. We only need to know the side of square to know about the perimeter

St1) we can easily deduce side of square from this info

Sufficient

St2) we know the side of one square from this info.
Sufficient

Answer is D

Thank you = Kudos
_________________
Thank you =Kudos
The best thing in life lies on the other side of the pain.
GMAT Club Bot
Re: What is the perimeter of a square chessboard, if a chessboard is made   [#permalink] 29 Aug 2018, 03:01
Display posts from previous: Sort by

What is the perimeter of a square chessboard, if a chessboard is made

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





Powered by phpBB © phpBB Group | Emoji artwork provided by EmojiOne