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The sum of x and y is 1 and their difference is 1/2
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24 Jun 2020, 09:40
24 Jun 2020, 09:40
Expert Reply
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Question Stats:
92% (01:00) correct
7% (00:41) wrong based on 42 sessions
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The sum of x and y is 1 and their difference is \(\frac{1}{2}\), where \(x > y \)
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.
Quantity A |
Quantity B |
The product of x and y |
\(\frac{x}{y}\) |
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.
Re: The sum of x and y is 1 and their difference is 1/2
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24 Jun 2020, 09:40
24 Jun 2020, 09:40
Expert Reply
Post A Detailed Correct Solution For The Above Questions And Get A Kudos.
Question From Our New Project: GRE Quant Challenge Questions Daily - NEW EDITION!
Question From Our New Project: GRE Quant Challenge Questions Daily - NEW EDITION!
Re: The sum of x and y is 1 and their difference is 1/2
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24 Jun 2020, 15:56
24 Jun 2020, 15:56
1
We can find two equations from the questions: x+y = 1 AND x-y = 1/2
From the first equation, we can solve it in terms of x or y (solving for x is easier so we can plug into the second equation and not worry about the negative sign)
x = 1 - y plug into the second equation
1 - y - y = 1/2
1 - 2 y = 1/2
2 y = 1/2
y = 1/4
x = 1 - 1/4
x = 3/4
Lets compare both options
Option A = (3/4)* (1/4) = 3/12
Option B = (3/4)/ (1/4) -> this is the same as multiplying the numerator by 4.
(3/4)*4 = 3
We can see that option B is bigger.
From the first equation, we can solve it in terms of x or y (solving for x is easier so we can plug into the second equation and not worry about the negative sign)
x = 1 - y plug into the second equation
1 - y - y = 1/2
1 - 2 y = 1/2
2 y = 1/2
y = 1/4
x = 1 - 1/4
x = 3/4
Lets compare both options
Option A = (3/4)* (1/4) = 3/12
Option B = (3/4)/ (1/4) -> this is the same as multiplying the numerator by 4.
(3/4)*4 = 3
We can see that option B is bigger.
