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GRE Math Challenge #57- Quantity A: (2+3x)/2
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Updated on: 19 Feb 2020, 09:57
Updated on: 19 Feb 2020, 09:57
2
Expert Reply
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Question Stats:
81% (00:33) correct
18% (00:17) wrong based on 86 sessions
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Quantity A |
Quantity B |
\(\frac{(2+3x)}{2}\) |
\(1+3x\) |
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 #57
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18 May 2015, 11:51
18 May 2015, 11:51
2
sandy wrote:
Quantity A: \((2+3x)/2\)
Quantity B: \(1+3x\)
Quantity B: \(1+3x\)
Let's use the technique of performing the same operation on each quantity. By the way, we have a free video on this strategy here: http://www.greenlighttestprep.com/module/gre-quantitative-comparison?id=1097
Okay, first multiply both quantities by 2 to get:
Quantity A: 2 + 3x
Quantity B: 2 + 6x
Subtract 2 from both quantities to get:
Quantity A: 3x
Quantity B: 6x
Subtract 3x from both quantities to get:
Quantity A: 0
Quantity B: 3x
Since x can be positive or negative (or even zero), there's no way to determine which quantity is greater.
Answer:
Show: ::
D
Cheers,
Brent
Re: GRE Math Challenge #57- Quantity A: (2+3x)/2
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19 Feb 2022, 02:12
19 Feb 2022, 02:12
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