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
Track
Your Progress
Practice
Pays
Not interested in getting valuable practice questions and articles delivered to your email? No problem, unsubscribe here.
x y = 6 and y + x = 4
[#permalink]
07 Jul 2022, 05:50
07 Jul 2022, 05:50
1
Expert Reply
00:00
Question Stats:
94% (00:50) correct
5% (00:59) wrong based on 19 sessions
Hide Show timer Statistics
\(x − y = 6\)
\(y + x = 4\)
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
\(y + x = 4\)
Quantity A |
Quantity B |
\(3x\) |
\(x \pi\) |
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
Part of the project: GRE QCQ & PS 3 Questions Every One DAILY Challenge - (2022)
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
GRE Math Essentials (2022)
GRE Geometry Formulas for a Q170
GRE - Math Book
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
GRE Math Essentials (2022)
GRE Geometry Formulas for a Q170
GRE - Math Book
Retired Moderator
Joined: 09 Nov 2021
Status:GRE Tutor London and Online
Affiliations: Private GMAT/GRE Tutor London
Posts: 76
Given Kudos: 6
Re: x y = 6 and y + x = 4
[#permalink]
07 Jul 2022, 06:35
07 Jul 2022, 06:35
1
Because we're given two equations and two unknowns, all we need to do is add the equations to one another. It's helpful to rearrange so that all of the x-values are on top of each other and likewise for the y-values.
x - y = 6
x + y = 4
--------
2x = 10
==>x=5 and y = -1
Now: notice the values that are given. If we have to choose between 3x and pi*x, then for positive values, pi*x is roughly 3.14*x so it will be greater, of course, than 3x. Note that for negative values of x, 3.14*x would be less.
In this case, x is indeed positive, so the answer is B.
x - y = 6
x + y = 4
--------
2x = 10
==>x=5 and y = -1
Now: notice the values that are given. If we have to choose between 3x and pi*x, then for positive values, pi*x is roughly 3.14*x so it will be greater, of course, than 3x. Note that for negative values of x, 3.14*x would be less.
In this case, x is indeed positive, so the answer is B.
gmatclubot
Re: x y = 6 and y + x = 4 [#permalink]
07 Jul 2022, 06:35
Moderators:
