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GRE Math Challenge #123-m= 4x + 4y, x not equal to -y
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Updated on: 20 Feb 2020, 15:07
Updated on: 20 Feb 2020, 15:07
1
Expert Reply
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Question Stats:
77% (00:37) correct
22% (00:42) wrong based on 89 sessions
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\(m= 4x + 4y\), \(x \neq -y\)
A)The quantity in Column A is greater.
B)The quantity in Column B is greater.
C)The two quantities are equal.
D)The relationship cannot be determined from the information given.
Kudos for the right answer and explanation
Quantity A |
Quantity B |
\(\frac{2m}{(x+y)}\) |
\(8\) |
A)The quantity in Column A is greater.
B)The quantity in Column B is greater.
C)The two quantities are equal.
D)The relationship cannot be determined from the information given.
Kudos for the right answer and explanation
Retired Moderator
Joined: 10 Apr 2015
Posts: 6218
Given Kudos: 136
Re: GRE Math Challenge #123
[#permalink]
17 May 2015, 16:37
17 May 2015, 16:37
sandy wrote:
m = 4x + 4y, x not equal to -y
Quantity A: 2m/(x+y)
Quantity B: 8
Quantity A: 2m/(x+y)
Quantity B: 8
Given: m = 4x + 4y
I notice that we have (x+y) in quantity A. So, let's make the given information look like (x+y)
If we take the equation m = 4x + 4y and divide both sides by 4, we get: m/4 = x+y
Now, in quantity A, we can replace (x+y) with m/4 to get:
Quantity A: 2m/(m/4) = (2m)(4/m) = 8m/m = 8
Quantity B: 8
Answer:
Show: ::
C
Cheers,
Brent
Re: GRE Math Challenge #123-m= 4x + 4y, x not equal to -y
[#permalink]
19 Feb 2022, 02:10
19 Feb 2022, 02:10
Hello from the GRE Prep Club BumpBot!
Thanks to another GRE Prep Club member, I have just discovered this valuable topic, yet it had no discussion for over a year. I am now bumping it up - doing my job. I think you may find it valuable (esp those replies with Kudos).
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Thanks to another GRE Prep Club member, I have just discovered this valuable topic, yet it had no discussion for over a year. I am now bumping it up - doing my job. I think you may find it valuable (esp those replies with Kudos).
Want to see all other topics I dig out? Follow me (click follow button on profile). You will receive a summary of all topics I bump in your profile area as well as via email.
