x | y | z | --------------- 4 | 1 |-5| m e | 7 | n | 10 f | : Quant Question Archive [LOCKED]
Check GMAT Club Decision Tracker for the Latest School Decision Releases http://gmatclub.com/AppTrack

 It is currently 19 Jan 2017, 19:45

### 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

# x | y | z | --------------- 4 | 1 |-5| m e | 7 | n | 10 f |

Author Message
Director
Joined: 14 Aug 2007
Posts: 733
Followers: 10

Kudos [?]: 181 [0], given: 0

x | y | z | --------------- 4 | 1 |-5| m e | 7 | n | 10 f | [#permalink]

### Show Tags

09 Mar 2008, 23:58
This topic is locked. If you want to discuss this question please re-post it in the respective forum.

+ | x | y | z |
---------------
4 | 1 |-5| m
e | 7 | n | 10
f | 2 |-4 | 5

What is the value of m+n?

Is it like this?

-5 + 1 + m = 4 so m = 8
f = 2 -4 + 5 = 3

****since f = 3 , e = 2?****

then n = -15

so m+n = 7 ?
SVP
Joined: 29 Aug 2007
Posts: 2492
Followers: 67

Kudos [?]: 734 [0], given: 19

### Show Tags

10 Mar 2008, 00:09
alpha_plus_gamma wrote:
+ | x | y | z |
---------------
4 | 1 |-5| m
e | 7 | n | 10
f | 2 |-4 | 5

What is the value of m+n?

Is it like this?

-5 + 1 + m = 4 so m = 8
f = 2 -4 + 5 = 3

****since f = 3 , e = 2?****

then n = -15

so m+n = 7 ?

m = z + 4
n = y + e
m + n = z + 4 + y + e

lets rearrange:
m + n = (z + e) + (4 + y)
m + n = 10 + (-5) because (z+e) should be equal to 10 and (4+y) = -5.
therefore, (m + n) = 5

i guess i also did it many times.
_________________

Gmat: http://gmatclub.com/forum/everything-you-need-to-prepare-for-the-gmat-revised-77983.html

GT

Director
Joined: 14 Aug 2007
Posts: 733
Followers: 10

Kudos [?]: 181 [0], given: 0

### Show Tags

10 Mar 2008, 00:25
GMAT TIGER wrote:
alpha_plus_gamma wrote:
+ | x | y | z |
---------------
4 | 1 |-5| m
e | 7 | n | 10
f | 2 |-4 | 5

What is the value of m+n?

Is it like this?

-5 + 1 + m = 4 so m = 8
f = 2 -4 + 5 = 3

****since f = 3 , e = 2?****

then n = -15

so m+n = 7 ?

m = z + 4
n = y + e
m + n = z + 4 + y + e

lets rearrange:
m + n = (z + e) + (4 + y)
m + n = 10 + (-5) because (z+e) should be equal to 10 and (4+y) = -5.
therefore, (m + n) = 5

i guess i also did it many times.

Thanks. I went dumb when i saw this problem.
Director
Joined: 05 Jan 2008
Posts: 701
Followers: 5

Kudos [?]: 415 [0], given: 0

### Show Tags

10 Mar 2008, 01:58
GMATTIGER,

I am lost
_________________

Persistence+Patience+Persistence+Patience=G...O...A...L

SVP
Joined: 29 Aug 2007
Posts: 2492
Followers: 67

Kudos [?]: 734 [0], given: 19

### Show Tags

10 Mar 2008, 21:48
alpha_plus_gamma wrote:
+ | x | y | z |
---------------
4 | 1 |-5| m
e | 7 | n | 10
f | 2 |-4 | 5

What is the value of m+n?

the positive sign, +, in the upper left tells that every entry in the box equal to sum of the corresponding element in the top row and first column.

so m = corresponding element in the top row (i.e. z) + corresponding element in the first column (i.e. 4) = z + 4
similarly n = y + e
so, m+n = y + e + z + 4
m+n = y + e + z + 4
lets try what value fits if we combine any two of the right hand side of the equation.

e + z = 10
y + 4 = -5

so lets sum them.
m+n = 10-5 = 5

did i make it clear?

prasannar wrote:
GMATTIGER,

I am lost

_________________

Gmat: http://gmatclub.com/forum/everything-you-need-to-prepare-for-the-gmat-revised-77983.html

GT

Director
Joined: 05 Jan 2008
Posts: 701
Followers: 5

Kudos [?]: 415 [0], given: 0

### Show Tags

11 Mar 2008, 01:06
Thank you, I understood
_________________

Persistence+Patience+Persistence+Patience=G...O...A...L

Display posts from previous: Sort by