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Retired Moderator Joined: 07 Jun 2014
Posts: 4803
GRE 1: Q167 V156 WE: Business Development (Energy and Utilities)
Followers: 175

Kudos [?]: 3036 , given: 394

1,200x + 6,000 = 13,200 12y + 60 = 132 [#permalink]
Expert's post 00:00

Question Stats: 92% (00:41) correct 7% (02:03) wrong based on 51 sessions
1,200x + 6,000 = 13,200
12y + 60 = 132

 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.
[Reveal] Spoiler: OA

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Sandy
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GRE Instructor Joined: 10 Apr 2015
Posts: 3907
Followers: 164

Kudos [?]: 4772 , given: 70

Re: 1,200x + 6,000 = 13,200 12y + 60 = 132 [#permalink]
Expert's post
sandy wrote:
1,200x + 6,000 = 13,200
12y + 60 = 132

 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.

Great question!!

Given:
1,200x + 6,000 = 13,200
12y + 60 = 132

Notice that, if we take the top equation and divide both sides by 100, we get the EQUIVALENT equation: 12x + 60 = 132
So, our two equations are now:
12x + 60 = 132
12y + 60 = 132

Since both equations are set equal to 132, we can conclude that: 12x + 60 = 12y + 60
Subtract 60 from both sides to get: 12x = 12y
Divide both sides by 12 to get: x = y

Cheers,
Brent
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Brent Hanneson – Creator of greenlighttestprep.com Intern Joined: 26 May 2018
Posts: 37
Followers: 0

Kudos [?]: 7 , given: 2

Re: 1,200x + 6,000 = 13,200 12y + 60 = 132 [#permalink]
Good one Re: 1,200x + 6,000 = 13,200 12y + 60 = 132   [#permalink] 26 May 2018, 13:00
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