Wednesday, December 17, 2008

SAT ? of the Day

Read the following SAT test question, then click on a button to select your answer.


If x + 2x is 5 more than y + 2y, then xy =



  1. –5

  2. negative 5 over 3

  3. 3 over 5

  4. 5 over 3

  5. 5






The statement given in words translates into the equation x + 2x = y + 2y + 5. This simplifies to 3x = 3y + 5. Then 3x – 3y = 5, and so 3(xy) = 5.

It follows that xy = 5 over 3.



  • Difficulty: Hard
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