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14 Nov 2014, 09:59
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D
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Difficulty:
5%
(low)
Question Stats:
88% (00:48) correct
12%
(00:59)
wrong
based on 118
sessions
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If \(r\), \(s\), and \(t\) are nonzero numbers, is \(rt = 14\)?
(1) \(r^2st = 14rs\)
(2) \(\frac{t}{2} = \frac{7}{r}\)
(1) \(r^2st = 14rs\)
(2) \(\frac{t}{2} = \frac{7}{r}\)
Pure algebraic questions like this one are no longer part of the GMAT Data Sufficiency syllabus.
For relevant Data Sufficiency questions, please check the Data Sufficiency forum:
Data Sufficiency Forum
Data Sufficiency Forum
14 Nov 2014, 11:40
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statement 1: sufficient
r^2st=14rs
divide both sides by rs to get rt=14
statement 2: sufficient
cross multiply to get rt =14
answer D!
r^2st=14rs
divide both sides by rs to get rt=14
statement 2: sufficient
cross multiply to get rt =14
answer D!
15 Nov 2014, 01:22
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Statement 1:
r^2st = 14rs
(r*s)(r*t) = 14*r*s
rt = 14
Sufficient. Hence options B,C,E are out
Statement 2:
\(\frac{t}{2}\) = \(\frac{7}{r}\) => rt =14
Sufficient
D
r^2st = 14rs
(r*s)(r*t) = 14*r*s
rt = 14
Sufficient. Hence options B,C,E are out
Statement 2:
\(\frac{t}{2}\) = \(\frac{7}{r}\) => rt =14
Sufficient
D
