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# In a used car lot, there are 3 times as many red cars as

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Intern
Joined: 16 Apr 2009
Posts: 14
In a used car lot, there are 3 times as many red cars as  [#permalink]

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Updated on: 17 Dec 2012, 07:39
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Question Stats:

100% (01:22) correct 0% (00:00) wrong based on 12 sessions

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In a used car lot, there are 3 times as many red cars as green cars. If tomorrow 12 green cars are sold and 3 red cars are added, then there will be 6 times as many red cars as green cars. How many green cars are currently in the lot?

Originally posted by Drik on 17 Dec 2012, 07:33.
Last edited by Bunuel on 17 Dec 2012, 07:39, edited 1 time in total.
Renamed the topic and moved to PS forum.
Math Expert
Joined: 02 Sep 2009
Posts: 61510
Re: In a used car lot, there are 3 times as many red cars as  [#permalink]

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17 Dec 2012, 07:43
Drik wrote:
In a used car lot, there are 3 times as many red cars as green cars. If tomorrow 12 green cars are sold and 3 red cars are added, then there will be 6 times as many red cars as green cars. How many green cars are currently in the lot?

Currently: R = 3G;

Tomorrow: R + 3 = 6*(G - 12) --> 3G + 3 = 6*(G - 12) --> G = 25.

Hope it's clear.
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Re: In a used car lot, there are 3 times as many red cars as   [#permalink] 17 Dec 2012, 07:43
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