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x and y
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30 Jun 2018, 10:05
30 Jun 2018, 10:05
2
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Question Stats:
61% (00:47) correct
38% (01:06) wrong based on 76 sessions
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Attachment:
xyw.png [ 2.96 KiB | Viewed 5375 times ]
Quantity A |
Quantity B |
x |
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
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Joined: 10 Apr 2015
Posts: 6218
Given Kudos: 136
Re: x and y
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04 Jul 2018, 06:12
04 Jul 2018, 06:12
1
amorphous wrote:
Attachment:
xyw.png
Quantity A |
Quantity B |
x |
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
We'll use the fact that angles on a line add to 180°
So, for example: x + (w - 1) = 180°
Likewise, we can write: y + (w + 1) = 180°
Since both equations are set equal to 180°, we can conclude that: x + (w - 1) = y + (w + 1)
Remove brackets to get: x + w - 1 = y + w + 1
Subtract w from both sides to get: x - 1 = y + 1
Add 1 to both sides to get: x = y + 2
Now take the two quantities and replace x with y + 2
We get:
Quantity A: y + 2
Quantity B: y
At this point, we can see that y + 2 is GREATER THAN y
Answer: A
Cheers,
Brent
Re: x and y
[#permalink]
25 Apr 2020, 00:27
25 Apr 2020, 00:27
2
I think it faster just to use numbers here, make w = 90 we get w-1 = 89 and w+1 = 91 meaning x = 180-91 > 180-91 (don't need to actually calculate anything, we just subtract a bigger number from y making it smaller
