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OG Review - DS #47

This topic has 1 expert reply and 4 member replies
bml1105 Master | Next Rank: 500 Posts
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OG Review - DS #47

Post Wed Jan 01, 2014 12:02 pm
Robots X, Y, and Z each assemble components at their respective constant rates. If rx is the ratio of Robot X's constant rate to Robot Z's constant rate and ry is the ratio of Robot Y's constant rate to Robot Z's constant rate, is Robot Z's constant rate the greatest of the three?

(1) rx < ry
(2) ry < 1


Answer: C

** My questions are below to avoid spoiling the answer for those that want to attempt the problem.



Last edited by bml1105 on Thu Jan 02, 2014 2:03 pm; edited 1 time in total

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Top Reply
Post Thu Jan 02, 2014 10:32 pm
bml1105 wrote:
Robots X, Y, and Z each assemble components at their respective constant rates. If rx is the ratio of Robot X's constant rate to Robot Z's constant rate and ry is the ratio of Robot Y's constant rate to Robot Z's constant rate, is Robot Z's constant rate the greatest of the three?

(1) rx < ry
(2) ry < 1


Answer: C
On the GMAT, the term ratio will always refer to POSITIVE values.
Please see my post here:

http://www.beatthegmat.com/ratio-t266289.html

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bml1105 Master | Next Rank: 500 Posts
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Post Sun Jan 05, 2014 8:53 pm
Thanks! I'm glad I'm not the only one that was a bit stumped by this question.

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Post Thu Jan 02, 2014 10:32 pm
bml1105 wrote:
Robots X, Y, and Z each assemble components at their respective constant rates. If rx is the ratio of Robot X's constant rate to Robot Z's constant rate and ry is the ratio of Robot Y's constant rate to Robot Z's constant rate, is Robot Z's constant rate the greatest of the three?

(1) rx < ry
(2) ry < 1


Answer: C
On the GMAT, the term ratio will always refer to POSITIVE values.
Please see my post here:

http://www.beatthegmat.com/ratio-t266289.html

_________________
Mitch Hunt
GMAT Private Tutor
GMATGuruNY@gmail.com
If you find one of my posts helpful, please take a moment to click on the "Thank" icon.
Available for tutoring in NYC and long-distance.
For more information, please email me at GMATGuruNY@gmail.com.

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Thanked by: bml1105
Free GMAT Practice Test How can you improve your test score if you don't know your baseline score? Take a free online practice exam. Get started on achieving your dream score today! Sign up now.
bml1105 Master | Next Rank: 500 Posts
Joined
24 Nov 2013
Posted:
113 messages
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5 members
Upvotes:
1
Post Sun Jan 05, 2014 8:53 pm
Thanks! I'm glad I'm not the only one that was a bit stumped by this question.

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bml1105 Master | Next Rank: 500 Posts
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Post Thu Jan 02, 2014 2:03 pm
Yes, sorry, the correct answer is C

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