Find all School-related info fast with the new School-Specific MBA Forum

It is currently 29 Jul 2015, 21:26
GMAT Club Tests

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.

Events & Promotions

Events & Promotions in June
Open Detailed Calendar

If x is equal to the sum of even integers from 40 to 60,

  Question banks Downloads My Bookmarks Reviews Important topics  
Author Message
Intern
Intern
avatar
Joined: 14 Mar 2006
Posts: 12
Followers: 0

Kudos [?]: 0 [0], given: 0

If x is equal to the sum of even integers from 40 to 60, [#permalink] New post 29 May 2006, 05:14
This topic is locked. If you want to discuss this question please re-post it in the respective forum.

If x is equal to the sum of even integers from 40 to 60, inclusive, and y is the number of even integers from 40 to 60, inclusive, what is the value of x + y

(a) 550
(b) 551
(c) 560
(d) 561
(e) 572

I got this question wrong and just cant figure why. My answer was (b).
GMAT Prep tells me that its (d)
Let me know what u guys find
Kaplan Promo CodeKnewton GMAT Discount CodesVeritas Prep GMAT Discount Codes
Manager
Manager
avatar
Joined: 25 Apr 2005
Posts: 196
Followers: 6

Kudos [?]: 44 [0], given: 2

 [#permalink] New post 29 May 2006, 05:30
There are 21 integers from 40 to 60 (inclusive). Of these, 11 are even (=y), and their mean is 50. 50*11 = 550 = x. So x+y = 550+11=561, the correct answer is d).
Director
Director
avatar
Joined: 10 Oct 2005
Posts: 531
Location: US
Followers: 1

Kudos [?]: 20 [0], given: 0

 [#permalink] New post 29 May 2006, 06:00
Average value - (40 + 60)/2 = 50

Number of intergers between 40 and 60 (inclusive) = 60 - 40 + 1 = 21

Since we are counting even integers with 40 inclusive there are 11 even integers...

so the total is 50 * 11 + 11 = 561
Senior Manager
Senior Manager
User avatar
Joined: 08 Jun 2004
Posts: 498
Location: Europe
Followers: 1

Kudos [?]: 26 [0], given: 0

 [#permalink] New post 29 May 2006, 10:58
Definitely D - 561. OA is wrong? :?
Manager
Manager
avatar
Joined: 11 Oct 2005
Posts: 94
Followers: 1

Kudos [?]: 4 [0], given: 0

 [#permalink] New post 03 Jun 2006, 13:47
I got D brute force style
Manager
Manager
User avatar
Joined: 17 Jan 2006
Posts: 92
Followers: 1

Kudos [?]: 5 [0], given: 0

 [#permalink] New post 04 Jun 2006, 17:53
Got this before..
Another D
Senior Manager
Senior Manager
avatar
Joined: 19 Feb 2005
Posts: 486
Location: Milan Italy
Followers: 1

Kudos [?]: 11 [0], given: 0

 [#permalink] New post 06 Jun 2006, 07:00
ahahha I got this wrong as well...I reviewed my calcs on the piece of paper and it was ridiculous: 550+11=551!!!
_________________

Please allow me to introduce myself: I'm a man of wealth and taste

  [#permalink] 06 Jun 2006, 07:00
Display posts from previous: Sort by

If x is equal to the sum of even integers from 40 to 60,

  Question banks Downloads My Bookmarks Reviews Important topics  


GMAT Club MBA Forum Home| About| Privacy Policy| Terms and Conditions| GMAT Club Rules| Contact| Sitemap

Powered by phpBB © phpBB Group and phpBB SEO

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®.