GMAT Question of the Day

December 11, 2013

 

 

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.

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Today's Practice GMAT Question:

A certain customer at a restaurant calculates his tip by adding a constant dollar amount to another sum that is directly proportional to the total bill for the meal. If his total bill for the meal was $24.00, what will the be the dollar amount of his tip?
(1) If the total bill for his meal had been four dollars greater, the customer would've calculated a tip of $4.80.
(2) If the total bill for his meal had been six dollars less, the customer would've calculated a tip of $3.80.
  
(A) Statement (1) ALONE is sufficient, but statement (2) alone is not sufficient.
(B) Statement (2) ALONE is sufficient, but statement (1) alone is not sufficient.
(C) BOTH statements TOGETHER are sufficient, but NEITHER statement ALONE is sufficient.
(D) EACH statement ALONE is sufficient.
(E) Statements (1) and (2) TOGETHER are NOT sufficient.


 

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 Ratios 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!
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