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If 2x > 3y, is x negative? (1) y > 0 (2) 2x + 5y 20 =

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Joined: 03 Oct 2008
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If 2x > 3y, is x negative? (1) y > 0 (2) 2x + 5y 20 = [#permalink]

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New post 09 Oct 2008, 05:57
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If –2x > 3y, is x negative?
(1) y > 0
(2) 2x + 5y – 20 = 0

A. Statement (1) ALONE is sufficient, but statement (2) alone is not sufficient.
B. Statement (2) ALONE is sufficient, but statement (1) alone is not sufficient.
C. BOTH statements TOGETHER are sufficient, but NEITHER statement ALONE is sufficient.
D. EACH statement ALONE is sufficient.
E. Statements (1) and (2) TOGETHER are NOT sufficient.

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Re: math--x and y [#permalink]

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New post 09 Oct 2008, 06:05
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IMO A:

do not know how to factorize B:... but guts are saying Y can have + and - both values so X can have and thus its insufficient.

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Re: math--x and y [#permalink]

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New post 09 Oct 2008, 06:53
[quote="albany09"]If –2x > 3y, is x negative?
(1) y > 0
(2) 2x + 5y – 20 = 0

REPHRASE

2X<-3Y

OF Y IS -VE THUS -3Y IS POSITIVE .....X CAN BE -VE OR +VE........INSUFF

FROM 2

2x = 20-5y........insuff
both

x is surely +ve

C

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Re: math--x and y [#permalink]

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New post 09 Oct 2008, 07:43
albany09 wrote:
If –2x > 3y, is x negative?
(1) y > 0
(2) 2x + 5y – 20 = 0

A. Statement (1) ALONE is sufficient, but statement (2) alone is not sufficient.
B. Statement (2) ALONE is sufficient, but statement (1) alone is not sufficient.
C. BOTH statements TOGETHER are sufficient, but NEITHER statement ALONE is sufficient.
D. EACH statement ALONE is sufficient.
E. Statements (1) and (2) TOGETHER are NOT sufficient.


IMO D

1) y>0 this is sufficient ,since this directly proves x <0

2) solve the two equations !!! we get x<-15 hence x is <0
SUFFI
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Re: math--x and y   [#permalink] 09 Oct 2008, 07:43
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If 2x > 3y, is x negative? (1) y > 0 (2) 2x + 5y 20 =

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