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What is the value of 5x/yz? (1) xyz = 40 (2) yz/x=10

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Manager
Joined: 13 Dec 2005
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What is the value of 5x/yz? (1) xyz = 40 (2) yz/x=10 [#permalink]  21 Mar 2006, 17:33
What is the value of 5x/yz?

(1) xyz = 40

(2) yz/x=10

Statement (1) ALONE is sufficient, but statement (2) alone is not sufficient.

Statement (2) ALONE is sufficient, but statement (1) alone is not sufficient.

BOTH statements TOGETHER are sufficient, but NEITHER statement ALONE is sufficient.

EACH statement ALONE is sufficient.

Statements (1) and (2) TOGETHER are NOT SUFFICIENT
Manager
Joined: 12 Feb 2006
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Re: PR Data Suff [#permalink]  21 Mar 2006, 18:09
ellisje22 wrote:
What is the value of 5x/yz?

(1) xyz = 40

(2) yz/x=10

Statement (1) ALONE is sufficient, but statement (2) alone is not sufficient.

Statement (2) ALONE is sufficient, but statement (1) alone is not sufficient.

BOTH statements TOGETHER are sufficient, but NEITHER statement ALONE is sufficient.

EACH statement ALONE is sufficient.

Statements (1) and (2) TOGETHER are NOT SUFFICIENT

1) xyz=40 x= 40/yz
solve for 5x/ yz ..Suff

2) yz/x=10, x=yz/10
can't solve for 5x/yz....Insuff

Please discuss this and pinpoint if i went wrong in my answer, thanks
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Intern
Joined: 26 Feb 2006
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Re: PR Data Suff [#permalink]  21 Mar 2006, 19:22
Angela780 wrote:
ellisje22 wrote:
What is the value of 5x/yz?

(1) xyz = 40

(2) yz/x=10

Statement (1) ALONE is sufficient, but statement (2) alone is not sufficient.

Statement (2) ALONE is sufficient, but statement (1) alone is not sufficient.

BOTH statements TOGETHER are sufficient, but NEITHER statement ALONE is sufficient.

EACH statement ALONE is sufficient.

Statements (1) and (2) TOGETHER are NOT SUFFICIENT

1) xyz=40 x= 40/yz
solve for 5x/ yz ..Suff

2) yz/x=10, x=yz/10
can't solve for 5x/yz....Insuff

Please discuss this and pinpoint if i went wrong in my answer, thanks

i have to disagree and go with B

What is the value of 5x/yz?

(1) xyz = 40
i cant see how x= 40/yz is suff...sub that into the actual question and I think it ends up sqauring the denomintor

(2) yz/x=10
inverse this and you get x/yz=1/10
look at the intial question, Factor it out and it'll look like 5*(x/yz)

therefore i say B
Manager
Joined: 30 Jan 2006
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(2) yz/x = 10 ---> x/yz = 1/10

Enough to obtain a value for 5 * x/yz, which is the question.
Manager
Joined: 09 Feb 2006
Posts: 91
Location: Prague, CZ
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I think it's B.

Statement 1 won't give you just one value.
Statement 2 says that x/yz=1/10, so 5x/yz must be 5/10=1/2
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