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A
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Difficulty:
15%
(low)
Question Stats:
84% (01:37) correct
16%
(01:30)
wrong
based on 140
sessions
History
Date
Time
Result
Not Attempted Yet
If yz not equal 0, what is the value of 12x/(yz)?
(1) x/y = 1/4 and 3z = 12
(2) 12y/(xz) = 12
(1) x/y = 1/4 and 3z = 12
(2) 12y/(xz) = 12
23 Apr 2015, 16:12
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NYCgirl15
1) \(z=4\); divide equation \(\frac{x}{y}=\frac{1}{4}\) on \(z\) and we receive \(\frac{x}{yz} = \frac{1}{16}\); multiple this result on \(12\) and receive \(\frac{x12}{yz}= \frac{12}{16}\); \(\frac{x12}{yz}= \frac{3}{4}\)
Sufficient
2) I think we can't transform this equation \(\frac{12y}{xz}\) to such form \(\frac{12x}{yz}\) so
Insufficient.
Answer is A
23 Apr 2015, 19:42
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NYCgirl15
Not sure about this one. Here goes:
Statement 1:
if x/y = 1/4 then x is 1 and y=4
if 3z=12 then z=4
12*1/4*4 =12/16 = 3/4
Sufficient.
Statement 2:
12y/xz=12 is insufficient on its own.... I think.
Answer is A
