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100 points for $49 worth of Veritas practice GMATs FREE VERITAS PRACTICE GMAT EXAMS Earn 10 Points Per Post Earn 10 Points Per Thanks Earn 10 Points Per Upvote ## A certain painting job requires a mixture of yellow, green, tagged by: AbeNeedsAnswers ##### This topic has 2 expert replies and 0 member replies ## A certain painting job requires a mixture of yellow, green, ## Timer 00:00 ## Your Answer A B C D E ## Global Stats Difficult A certain painting job requires a mixture of yellow, green, and white paint. If 12 quarts of paint are needed for the job, how many quarts of green paint are needed? (1) The ratio of the amount of green paint to the amount of yellow and white paint combined needs to be 1 to 3. (2) The ratio of the amount of yellow paint to the amount of green paint needs to be 3 to 2. A Source: Official Guide 2020 ### GMAT/MBA Expert GMAT Instructor Joined 02 Jun 2008 Posted: 2475 messages Followed by: 350 members Upvotes: 1090 GMAT Score: 780 From Statement 1, 1/4 of the mixture is green paint, and since we know we have 12 quarts of paint in total, we must have 3 quarts of green paint. So Statement 1 is sufficient. Statement 2 is not sufficient because we have no information about what fraction of the mixture is white paint. _________________ If you are looking for online GMAT math tutoring, or if you are interested in buying my advanced Quant books and problem sets, please contact me at ianstewartgmat at gmail.com ### GMAT/MBA Expert Elite Legendary Member Joined 23 Jun 2013 Posted: 10197 messages Followed by: 496 members Upvotes: 2867 GMAT Score: 800 Hi All, We're told that a certain painting job requires a mixture of yellow, green, and white paint and that 12 quarts of paint are needed for the job. We're asked for the number of quarts of GREEN paint that are needed. This question can be answered with ratio-based math and TESTing VALUES. (1) The ratio of the amount of green paint to the amount of yellow and white paint combined needs to be 1 to 3. With the information in Fact 1, we have the following relationship: (Green) : (Yellow + White) = 1 : 3 This means that for every 1 quart of green paint, we have a total of 3 quarts of yellow and white paint, so we can think of this ratio in terms of '4 quart blocks'. With 12 total quarts, we would have 3 of those blocks - meaning that we have 3 quarts of green paint and 9 quarts of yellow+white paint. The actual amounts of yellow and white paint don't matter though, since we're asked for the amount of GREEN paint and we now know that the answer must be 3. Fact 1 is SUFFICIENT (2) The ratio of the amount of yellow paint to the amount of green paint needs to be 3 to 2. Fact 2 gives us a different ratio, but not enough to determine the exact amount of green paint.... IF.... Yellow = 3 quarts, Green = 2 quarts and White = 7 quarts, then the answer to the question is 2. Yellow = 6 quarts, Green = 4 quarts and White = 2 quarts, then the answer to the question is 4. Fact 2 is INSUFFICIENT Final Answer: A GMAT assassins aren't born, they're made, Rich _________________ Contact Rich at Rich.C@empowergmat.com • 5-Day Free Trial 5-day free, full-access trial TTP Quant Available with Beat the GMAT members only code • Free Veritas GMAT Class Experience Lesson 1 Live Free Available with Beat the GMAT members only code • Magoosh Study with Magoosh GMAT prep Available with Beat the GMAT members only code • FREE GMAT Exam Know how you'd score today for$0

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