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x and y are two numbers

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x and y are two numbers [#permalink] New post 24 Apr 2018, 01:57
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Question Stats:

51% (00:38) correct 48% (00:23) wrong based on 29 sessions
x and y are two numbers

Quantity A
Quantity B
The product of x and y
The product of 80% of x and
125% of 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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[Reveal] Spoiler: OA

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Last edited by Carcass on 31 Aug 2018, 03:21, edited 1 time in total.
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Re: x and y are two numbers [#permalink] New post 24 Apr 2018, 03:05
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I think the answer option given is wrong. It should be D. As nothing is mentioned about propeties of these numbers, they both can be same and =0.

Hence D
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Re: x and y are two numbers [#permalink] New post 24 Apr 2018, 09:08
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If you think in a more abstract way:

A)\(x*y\)

B) \(\frac{4}{5}x * \frac{5}{4}y = x*y\)

So the answer is C.

However, the question is flawed: if you pick numbers the two quantities are NOT equal. So the answer is D.

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Re: x and y are two numbers [#permalink] New post 31 Aug 2018, 00:47
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Carcass wrote:
If you think in a more abstract way:

A)\(x*y\)

B) \(\frac{4}{5}x * \frac{5}{4}y = x*y\)

So the answer is C.

However, the question is flawed: if you pick numbers the two quantities are NOT equal. So the answer is D.

Regards



but spoiler still says C..it shoudl be D right.
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Re: x and y are two numbers [#permalink] New post 31 Aug 2018, 03:21
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Done and thank you so much.

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Re: x and y are two numbers [#permalink] New post 31 Aug 2018, 21:23
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Is the answer D as x,y can take any value even zero?
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Re: x and y are two numbers [#permalink] New post 01 Sep 2018, 10:34
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Yes, confirmed.

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Re: x and y are two numbers [#permalink] New post 01 Sep 2018, 23:59
No matter what x and y are, xy = xy is always true. Why would C be not correct?
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Re: x and y are two numbers [#permalink] New post 02 Sep 2018, 02:08
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Re: x and y are two numbers [#permalink] New post 02 Sep 2018, 02:25
Carcass wrote:


Sorry still don't get you. What numbers you talking about? Numbers for x and y?
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Re: x and y are two numbers [#permalink] New post 02 Sep 2018, 02:40
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Guys, I think we have overlooked the question.

The OA is correct and it is C.

If we pick numbers and these are : -1/2, -1, 0, 1, 1/2

The result of any combination of these is always C. Whenever the stem does not mention anything about what numbers we have to deal with, the consequence is that not always the time the answer is D.

Thank you for the discussion
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Re: x and y are two numbers [#permalink] New post 02 Sep 2018, 02:44
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Carcass wrote:
Guys, I think we have overlooked the question.

The OA is correct and it is C.

If we pick numbers and these are : -1/2, -1, 0, 1, 1/2

The result of any combination of these is always C. Whenever the stem does not mention anything about what numbers we have to deal with, the consequence is that not always the time the answer is D.

Thank you for the discussion


Thank you for clarifying. Been scratching my head what's wrong, what's wrong..
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Re: x and y are two numbers [#permalink] New post 02 Sep 2018, 02:45
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A) x*y

B) (80% of x ) * (125% of y) => [(80/100)*x] * [(125/100)*y]. Simplifying this expression gives x*y which is same as A.

Hence both quantities are same. Answer choice C
Re: x and y are two numbers   [#permalink] 02 Sep 2018, 02:45
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