Last visit was: 20 Apr 2025, 13:34 It is currently 20 Apr 2025, 13:34
Decision Tracker
My Rewards
New comers' posts
New posts
Unanswered

Close

GRE Prep 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

we will pick new questions that match your level based on your Timer History

Track
Your Progress

every week, we’ll send you an estimated GRE score based on your performance

Practice
Pays

we will pick new questions that match your level based on your Timer History

Not interested in getting valuable practice questions and articles delivered to your email? No problem, unsubscribe here.

Go to My Error Log Learn more
Close

Request Expert Reply

Confirm Cancel
PREVIOUS TOPIC
NEXT TOPIC

Compare Quantities A & B - 5X*3 and (5x)"3 (From Ready4GRE)

Tags :
Find Similar Topics  About  Add a Tag

Show Tags
Hide Tags

avatar
leonidbasin1
Manager
Manager
Joined: 05 Sep 2016
Posts: 80
Own Kudos [?]: 59 [1]
Given Kudos: 0
Send PM
Compare Quantities A & B - 5X*3 and (5x)"3 (From Ready4GRE) [#permalink] New post   Updated on: 23 Aug 2017, 07:14
1
Bookmarks
00:00

Question Stats:

50% (00:39) correct 50% (00:25) wrong based on 10 sessions

Hide Show timer Statistics

Hi,

This is a bit confusing. Can someone please explain this to me?

Quantity A
Quantity B
\(5x^3\)
\((5x)^3\)





A. Quantity A is greater.
B. Quantity B is greater.
C. The two quantities are equal.
D. The relationship cannot be determined from the information given.
ShowHide Answer
Official Answer
D

Originally posted by leonidbasin1 on 02 Feb 2017, 12:16.
Last edited by mpmbtr on 23 Aug 2017, 07:14, edited 2 times in total.
Edited by carcass
User avatar
sandy
Retired Moderator
Joined: 07 Jun 2014
Posts: 4815
Own Kudos [?]: 11370 [0]
Given Kudos: 0
GRE 1: Q167 V156
WE:Business Development (Energy and Utilities)
Send PM
Re: Compare Quantities A & B - 5X*3 and (5x)"3 (From Ready4GRE) [#permalink] New post   02 Feb 2017, 18:23
2
Expert Reply
Quantity A - \(5x^3\)

Quantity B - \((5x)^3\)


Since nothing is mentioned about x. Put x =0 and X=1.

When x =0 Quantity A = Quantity B = 0 C should be correct.

When x=1 Quantity A=5 and Quantity B = 125 B should be correct..

Thus clearly the option that is correct is D.
User avatar
P
GreenlightTestPrep
Retired Moderator
Joined: 10 Apr 2015
Posts: 6218
Own Kudos [?]: 12359 [1]
Given Kudos: 136
Send PM

Top Member of the Month
Re: Compare Quantities A & B - 5X*3 and (5x)"3 (From Ready4GRE) [#permalink] New post   23 Mar 2021, 04:54
1
leonidbasin1 wrote:

Quantity A
Quantity B
\(5x^3\)
\((5x)^3\)



We can solve this question using matching operations (my favorite Quantitative Comparison strategy)
Given:
Quantity A: \(5x^3\)
Quantity B: \((5x)^3\)

Expand Quantity B to get:
Quantity A: \(5x^3\)
Quantity B: \(125x^3\)

Subtract \(5x^3\) from both quantities to get:
Quantity A: \(0\)
Quantity B: \(120x^3\)


At this point, we can see that,...
If x = 0, the two quantities are equal
If x = 1, Quantity B is greater
If x = -1, Quantity A is greater

Answer: D




RELATED VIDEO
Prep Club for GRE Bot
gmatclubot
Re: Compare Quantities A & B - 5X*3 and (5x)"3 (From Ready4GRE) [#permalink]
23 Mar 2021, 04:54
Moderators:
adewale223
GRE Instructor
108 posts
bronaugust
GRE Forum Moderator
37 posts
BrushMyQuant
Moderator
1131 posts
VibhuAnurag
GRE Instructor
234 posts

Powered by phpBB © phpBB Group | Emoji artwork provided by EmojiOne

Main navigation

Partners

GRE Resources

www.ets.org/gre | About | Terms and Conditions and Privacy Policy | Prep Club for GRE Rules | Contact