|
|
GMAT Club Daily Prep
Thank you for using the timer - this advanced tool can estimate your performance and suggest more practice questions. We have subscribed you to Daily Prep Questions via email.
Customized
for You
Track
Your Progress
Practice
Pays
Not interested in getting valuable practice questions and articles delivered to your email? No problem, unsubscribe here.
Updated on: 05 Mar 2016, 19:43
Originally posted by tonebeeze on 19 Oct 2010, 12:15.
Last edited by ENGRTOMBA2018 on 05 Mar 2016, 19:43, edited 1 time in total.
Last edited by ENGRTOMBA2018 on 05 Mar 2016, 19:43, edited 1 time in total.
Reformatted the question
Kudos
Bookmarks
A
Be sure to select an answer first to save it in the Error Log before revealing the correct answer (OA)!
Difficulty:
15%
(low)
Question Stats:
79% (01:24) correct
21%
(02:08)
wrong
based on 952
sessions
History
Date
Time
Result
Not Attempted Yet
If \(xy \neq 0\), what is the value of \(\frac{((x^2)^3 y^4)}{x}\)?
(1) \(x^3y^5 = \frac{6y}{x^2}\)
(2) \(x = 2y\)
(1) \(x^3y^5 = \frac{6y}{x^2}\)
(2) \(x = 2y\)
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
19 Oct 2010, 12:23
Kudos
Bookmarks
tonebeeze
\(xy\neq{0}\) means that neither of unknowns equals to zero.
\(\frac{(x^2)^3*y^4}{x}=\frac{x^6*y^4}{x}=x^5*y^4=?\)
(1) \(x^3y^5=\frac{6y}{x^2}\) --> multiple by \(x^2\) --> \(x^5y^5=6y\) --> reduce by \(y\) --> \(x^5y^4=6\). Sufficient.
(2) \(x=2y\) --> \(x^5*y^4=(2y)^5*y^4=32y^9=?\) --> need to know the value of \(y\) (or \(x\)). Not sufficient.
Answer: A.
For more on exponents check Number Theory chapter of Math Book: math-number-theory-88376.html
Hope it helps.
19 Oct 2010, 14:29
Kudos
Bookmarks
Thanks Bunuel. I apologize for the bad formatting. Won't happen again!
