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value of x + y

This topic has 1 expert reply and 2 member replies

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sanju09 GMAT Instructor
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value of x + y

Post Wed Sep 15, 2010 1:03 am
What is the value of x + y?

[1] x y = 24.

[2] x/y = 8/3.



Source: http://readyforgmat.com

_________________
The mind is everything. What you think you become. –Lord Buddha



Sanjeev K Saxena
Quantitative Instructor
The Princeton Review - Manya Abroad
Lucknow-226001

www.manyagroup.com

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alivapriyada Master | Next Rank: 500 Posts
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Post Wed Sep 15, 2010 3:00 am
sanju09 wrote:
alivapriyada wrote:
Quote:
What is the value of x + y?

[1] x y = 24.

[2] x/y = 8/3
.

stmnt 1- xy=24
we cannot determine x+y
Stmnt2 - x/y=8/3
so x=8y/3
or x+y=8y/3+y=11y/3
not sufficient.

combining both statements even wont result in any specific answer
SO IMO E
waiting for the OA and a better expanation!!
This is right that no statement alone is sufficient here. Let’s take the two together

Put y = 3 x/8 from [2] in [1], a quadratic in x would be obtained, giving out two results for x; or if you put x = 8 y/3 from [2] in [1], a quadratic in y would be obtained, giving out two results for y. Hence, together too, insufficient

E is right, is your wait over?
Smile Smile yes!!!!

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GMAT/MBA Expert

sanju09 GMAT Instructor
Joined
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Posted:
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Post Wed Sep 15, 2010 2:56 am
alivapriyada wrote:
Quote:
What is the value of x + y?

[1] x y = 24.

[2] x/y = 8/3
.

stmnt 1- xy=24
we cannot determine x+y
Stmnt2 - x/y=8/3
so x=8y/3
or x+y=8y/3+y=11y/3
not sufficient.

combining both statements even wont result in any specific answer
SO IMO E
waiting for the OA and a better expanation!!
This is right that no statement alone is sufficient here. Let’s take the two together

Put y = 3 x/8 from [2] in [1], a quadratic in x would be obtained, giving out two results for x; or if you put x = 8 y/3 from [2] in [1], a quadratic in y would be obtained, giving out two results for y. Hence, together too, insufficient

E is right, is your wait over?

_________________
The mind is everything. What you think you become. –Lord Buddha



Sanjeev K Saxena
Quantitative Instructor
The Princeton Review - Manya Abroad
Lucknow-226001

www.manyagroup.com

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Free GMAT Practice Test How can you improve your test score if you don't know your baseline score? Take a free online practice exam. Get started on achieving your dream score today! Sign up now.
alivapriyada Master | Next Rank: 500 Posts
Joined
25 Jun 2010
Posted:
146 messages
Followed by:
1 members
Upvotes:
3
Target GMAT Score:
700+
GMAT Score:
560
Post Wed Sep 15, 2010 2:29 am
Quote:
What is the value of x + y?

[1] x y = 24.

[2] x/y = 8/3
.

stmnt 1- xy=24
we cannot determine x+y
Stmnt2 - x/y=8/3
so x=8y/3
or x+y=8y/3+y=11y/3
not sufficient.

combining both statements even wont result in any specific answer
SO IMO E
waiting for the OA and a better expanation!!

  • +1 Upvote Post
  • Quote
  • Flag

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