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

 It is currently 22 May 2015, 06:38

### 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 June
Open Detailed Calendar

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

Author Message
TAGS:
Intern
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]  29 May 2006, 05:14
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 GMAT Prep Discount Codes Knewton GMAT Discount Codes Veritas Prep GMAT Discount Codes
Manager
Joined: 25 Apr 2005
Posts: 196
Followers: 6

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

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
Joined: 10 Oct 2005
Posts: 531
Location: US
Followers: 1

Kudos [?]: 13 [0], given: 0

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
Joined: 08 Jun 2004
Posts: 498
Location: Europe
Followers: 1

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

Definitely D - 561. OA is wrong?
Manager
Joined: 11 Oct 2005
Posts: 94
Followers: 1

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

I got D brute force style
Manager
Joined: 17 Jan 2006
Posts: 92
Followers: 1

Kudos [?]: 3 [0], given: 0

Got this before..
Another D
Senior Manager
Joined: 19 Feb 2005
Posts: 487
Location: Milan Italy
Followers: 1

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

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

Similar topics Replies Last post
Similar
Topics:
9 If x is equal to the sum of the even integers from 40 to 60 18 03 Jul 2009, 19:07
If x is equal to the sum of even integers from 40 to 60, 3 04 May 2008, 11:37
If x is equal to the sum of even integers from 40 to 60, 4 03 Aug 2007, 18:46
If x is equal to the sum of the even integers from 40 to 60, 3 15 Apr 2006, 20:00
If x is equal to the sum of even integers from 40 to 60, 10 07 Oct 2005, 06:21
Display posts from previous: Sort by