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3x + 5y + 2z = 20 6x + 4z = 10
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17 Sep 2017, 11:55
17 Sep 2017, 11:55
1
Expert Reply
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Question Stats:
81% (00:41) correct
18% (00:51) wrong based on 80 sessions
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3x + 5y + 2z = 20
6x + 4z = 10
Quantity A |
Quantity B |
y |
2 |
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.
Retired Moderator
Joined: 10 Apr 2015
Posts: 6218
Given Kudos: 136
Re: 3x + 5y + 2z = 20 6x + 4z = 10
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17 Sep 2017, 14:17
17 Sep 2017, 14:17
1
Carcass wrote:
3x + 5y + 2z = 20
6x + 4z = 10
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.
6x + 4z = 10
Quantity A |
Quantity B |
y |
2 |
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.
Given:
3x + 5y + 2z = 20
6x + 4z = 10
Take top equation and multiply both sides by 2 to get the following equivalent equation:
6x + 10y + 4z = 40
6x + 4z = 10
Subtract the bottom equation from the top equation to get: 10y = 30
Solve: y = 3
So, we get:
Quantity A: 3
Quantity B: 2
Answer:
Show: ::
A
Cheers,
Brent
Re: 3x + 5y + 2z = 20 6x + 4z = 10
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20 Apr 2021, 11:28
20 Apr 2021, 11:28
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.
