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Which is greater x+y or 35
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09 May 2015, 11:21
09 May 2015, 11:21
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Question Stats:
91% (00:29) correct
8% (00:45) wrong based on 227 sessions
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\(x<y<20\)
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 |
\(x + y\) |
35 |
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 #102
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12 May 2015, 08:45
12 May 2015, 08:45
3
sandy wrote:
\(x<y<20\)
Quantity A: x + y
Quantity B: 35
Quantity A: x + y
Quantity B: 35
One of my favorite QC strategies is called "Looking for Equality" (free video on this topic here: http://www.greenlighttestprep.com/modul ... on?id=1099).
In this strategy, I first look for values of x and y such that the quantities A and B are equal.
Consider these two cases:
Case #1: x = 17 and y = 18
Quantity A: x + y = 17 + 18 = 35
Quantity B: 35
Since the two quantities are EQUAL, the correct answer is EITHER C or D
Now try some other values of x and y:
Case #2: x = 1 and y = 2
Quantity A: x + y = 1 + 2 = 3
Quantity B: 35
Since the two quantities are NOT EQUAL, the correct answer is D
Cheers,
Brent
Re: GRE Math Challenge #102- x<y<20
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11 Aug 2018, 12:58
11 Aug 2018, 12:58
1
sandy wrote:
\(x<y<20\)
Quantity A: \(x + y\)
Quantity B: 35
• Quantity A is greater.
• Quantity B is greater.
• Both Quantities are Equal
• Cannot be determined
Quantity A: \(x + y\)
Quantity B: 35
• Quantity A is greater.
• Quantity B is greater.
• Both Quantities are Equal
• Cannot be determined
x<y<20.
Note: we don't know whether x and y are positive or negative . Both can be positive or negative or combination. So, we don't have specific data here. Answer will vary for these reasons. At the same time we don't know whether they are consecutive or not.
The best answer is D.
