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Material A costs $3 per kilogram, and material B costs $5 [#permalink]
 08 Jan 2008, 08:53
Question Stats:
0% (00:00) correct
 0% (00:00) wrong based on 0 sessions
Material A costs $3 per kilogram, and material B costs $5 per kilogram. If 10 kilograms
of material K consists of x kilograms of material A and y kilograms of material B, is x >
y?
(1) y > 4
(2) The cost of the 10 kilograms of material K is less than $40.
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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CEO
Joined: 17 Nov 2007
Posts: 3591
Concentration: Entrepreneurship, Other
Schools: Chicago (Booth) - Class of 2011
GMAT 1: 750 Q50 V40
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Re: DS inequality S23_3 [#permalink]
08 Jan 2008, 10:04
B(1) y > 4. y=4.5 x=5.5 and y=9 x=1 both satisfied the condition but we can't answer the question. (2) 3x+5y<40 x+y=10 ==> 4x+4y=40 ==> 3x+5y<4x+4y ==> y<x. SUFF.
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Re: DS inequality S23_3
[#permalink]
08 Jan 2008, 10:04
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