What is the value of x/3+y/3?
(1) (x+y)/3 = 6
(2) x + y = 18
[spoiler]OA=D[/spoiler]
How can I get an answer just using one statement? Are not needed both equations to solve this DS question? Help!!!<i class="em em-weary"></i>
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What is the value of x/3+y/3?
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Gmat_mission
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Brent@GMATPrepNow
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Target question: What is the value of x/3 + y/3?Gmat_mission wrote:What is the value of x/3 + y/3?
(1) (x + y)/3 = 6
(2) x + y = 18
Statement 1: (x + y)/3 = 6
Nice (and often tested) rule: (a + b)/c = a/c + b/c
So, we can rewrite the equation as: x/3 + y/3 = 6
So, the answer to the target question is x/3 + y/3 = 6
Since we can answer the target question with certainty, statement 1 is SUFFICIENT
Statement 2: x + y = 18
Take x + y = 18 and divide both sides by 3 to get: x/3 + y/3 = 18/3
Simplify to get: x/3 + y/3 = 6
So, the answer to the target question is x/3 + y/3 = 6
Since we can answer the target question with certainty, statement 2 is SUFFICIENT
Answer: D
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Brent
Brent Hanneson - Creator of GMATPrepNow.com
