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GMAT Question of the Day
September 22, 2014
Every weekday, GMAT Hacks publishes a realistic GMAT practice question. In general, you'll see Quant problems on Monday, Wednesday, and Friday, and Verbal questions on Tuesday and Thursday. You'll always be able to find them at www.gmathacks.com/daily.
Give today's question a try, and check your answer. When you're done, be sure to subscribe so that you can keep practicing every day!
Today's Practice GMAT Question:
power windows: 60%
antilock brakes: 25% CD player: 40% 

The table above shows the number of vehicles at Bill's car dealership that have certain features. No vehicle has all three features, but 10% have power windows and antilock brakes, 15% have antilock brakes and a CD player, and 22% have power windows and a CD player. What percent of the vehicles at Bill's car dealership have a CD player but no power windows or antilock brakes?  
(A)  25 
(B)  18 
(C)  11 
(D)  3 
(E)  0 
Click to show answer (opens in new window)
Need more work in this area? Check out the Word Problems: Challenge set of (100) practice problems.There is also a full chapter covering Overlapping Sets in Total GMAT Math. It includes additional practice problems, as well.
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About the author: Jeff Sackmann has written many GMAT preparation books, including the popular Total GMAT Math, Total GMAT Verbal, and GMAT 111. He has also created explanations for problems in The Official Guide, as well as 1,800 practice GMAT math questions.
Total GMAT Math
The comprehensive guide to the GMAT Quant section. It's "far and away the best study material
available," including over 300 realistic practice questions and more than 500 exercises! 