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If a, b, c, and d are positive integers, is (a/b) (c/d) >

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Manager
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If a, b, c, and d are positive integers, is (a/b) (c/d) > [#permalink] New post 16 Mar 2005, 18:22
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A
B
C
D
E

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If a, b, c, and d are positive integers, is (a/b) (c/d) > c/b?
(1) c > b
(2) a > d

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.


Explain Pls!!!
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 [#permalink] New post 16 Mar 2005, 19:02
"B"


rearrange....(a/d)*(c/b) > c/b....we can see that only when a > d, the left hand side will be bigger...state 2 gives us that...suff
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Re: DS [#permalink] New post 16 Mar 2005, 20:40
Lets refrase the question: is (ac)/(bd)>c/b? or a/d>1?

from (i), c > b. we do not know whether a>d or a<d.
from (ii), a > d. if so, a/d>1. so (ii) is suff.
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 [#permalink] New post 17 Mar 2005, 03:56
solve the stems u will get is C > D

answer B
  [#permalink] 17 Mar 2005, 03:56
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