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Senior Manager Joined: 20 May 2014
Posts: 282
Followers: 18

Kudos [?]: 50 , given: 220

Which is greater? [#permalink] 00:00

Question Stats: 100% (00:24) correct 0% (00:00) wrong based on 23 sessions
 Quantity A Quantity B 10x+2 2x+10

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 correct solution.
[Reveal] Spoiler: OA Director Joined: 20 Apr 2016
Posts: 824
WE: Engineering (Energy and Utilities)
Followers: 10

Kudos [?]: 601  , given: 121

Re: Which is greater? [#permalink]
1
KUDOS
Bunuel wrote:
 Quantity A Quantity B 10x+2 2x+10

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 correct solution.

No information is given for x and it can be fraction or real number, so option D
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Senior Manager Joined: 20 May 2014
Posts: 282
Followers: 18

Kudos [?]: 50 , given: 220

Re: Which is greater? [#permalink]
pranab01 wrote:
Bunuel wrote:
 Quantity A Quantity B 10x+2 2x+10

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 correct solution.

No information is given for x and it can be fraction or real number, so option D

Real numbers include fractions, irrational numbers and integers. I think you meant "integer" instead. But even if we were given that x is a non-integer (a fraction or an irrational number) or integer, the answer still would be D.
Director Joined: 20 Apr 2016
Posts: 824
WE: Engineering (Energy and Utilities)
Followers: 10

Kudos [?]: 601 , given: 121

Re: Which is greater? [#permalink]
Bunuel wrote:
pranab01 wrote:
Bunuel wrote:
 Quantity A Quantity B 10x+2 2x+10

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 correct solution.

No information is given for x and it can be fraction or real number, so option D

Real numbers include fractions, irrational numbers and integers. I think you meant "integer" instead. But even if we were given that x is a non-integer (a fraction or an irrational number) or integer, the answer still would be D.

yes. you are right. Apology for the typo mistake.
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Director Joined: 03 Sep 2017
Posts: 521
Followers: 1

Kudos [?]: 344 , given: 66

Re: Which is greater? [#permalink]
Bunuel wrote:
pranab01 wrote:
Bunuel wrote:
 Quantity A Quantity B 10x+2 2x+10

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 correct solution.

No information is given for x and it can be fraction or real number, so option D

Real numbers include fractions, irrational numbers and integers. I think you meant "integer" instead. But even if we were given that x is a non-integer (a fraction or an irrational number) or integer, the answer still would be D.

If we rearrange we are left with quantity A being 8x and quantity B being 8. Then, since there are no restrictions about x, it can be whatever.
E.g. if x = 1, then the two quantities are equal
if x = -2, then quantity B is greater
if x = 2, then quantity A is greater.

Thus the answer is D GRE Instructor Joined: 10 Apr 2015
Posts: 1530
Followers: 55

Kudos [?]: 1456  , given: 8

Re: Which is greater? [#permalink]
2
KUDOS
Expert's post
Bunuel wrote:
 Quantity A Quantity B 10x+2 2x+10

We can solve this question using matching operations

Given:
Quantity A: 10x + 2
Quantity B: 2x + 10

Subtract 2x from both quantities to get:
Quantity A: 8x + 2
Quantity B: 10

Subtract 2 from both quantities to get:
Quantity A: 8x
Quantity B: 8

Divide both quantities by 8 to get:
Quantity A: x
Quantity B: 1

Since we have no information about x, quantity A COULD be greater than, less than or equal to quantity B
[Reveal] Spoiler:
D

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Intern Joined: 11 Jan 2018
Posts: 44
Followers: 0

Kudos [?]: 33 , given: 7

Re: Which is greater? [#permalink]
Quantity A and Quantity B need to be simplified first, so we will able to decide about the answer without plugin.

Quantity A: 10x + 2
Quantity B: 2x + 10

If we subtract any value from the two Quantities, the resultant will not change the greater quantity to less. So we can subtract by same value.

So let's subtract by (2x +2) from both Quantity A and Quantity B, we'll get:

Quantity A: 8x
Quantity B: 8

Finally, we can decide easily that x can be positive, negative or zero. Thus, Choice D is correct.
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Intern Joined: 28 Feb 2018
Posts: 30
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Kudos [?]: 2 , given: 0

Re: Which is greater? [#permalink]
if the x is negative than the right answer is A. If it is positive then the answer is B. Hence the right answer is D Re: Which is greater?   [#permalink] 11 Mar 2018, 07:08
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