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# x and y are two numbers

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x and y are two numbers [#permalink]  24 Apr 2018, 01:57
Expert's post
00:00

Question Stats:

52% (00:36) correct 47% (00:20) wrong based on 38 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

Kudos for the right answer and solution.
[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]  24 Apr 2018, 03:05
2
KUDOS
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]  24 Apr 2018, 09:08
1
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Expert's post
If you think in a more abstract way:

A)$$x*y$$

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

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

Regards
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GRE 1: Q142 V146
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Re: x and y are two numbers [#permalink]  31 Aug 2018, 00:47
1
KUDOS
Carcass wrote:
If you think in a more abstract way:

A)$$x*y$$

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

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.
Moderator
Joined: 18 Apr 2015
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Kudos [?]: 1113 [0], given: 5129

Re: x and y are two numbers [#permalink]  31 Aug 2018, 03:21
Expert's post
Done and thank you so much.

Regards
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Re: x and y are two numbers [#permalink]  31 Aug 2018, 21:23
1
KUDOS
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]  01 Sep 2018, 10:34
Expert's post
Yes, confirmed.

Regards
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Re: x and y are two numbers [#permalink]  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]  02 Sep 2018, 02:08
Expert's post
Simon,

see my explanation above https://greprepclub.com/forum/x-and-y-a ... tml#p18805
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Re: x and y are two numbers [#permalink]  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]  02 Sep 2018, 02:40
1
KUDOS
Expert's post
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]  02 Sep 2018, 02:44
1
KUDOS
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]  02 Sep 2018, 02:45
1
KUDOS
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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