Andrew Geller

The table shows the numbers of packages shipped daily by each of five companies during a 4-day period. The standard deviation of the numbers of packages shipped daily during the period was greatest for which of the five companies? A. A B. B C. C D. D E. E Correct Answer: B Full explanation coming […]

Which of the following is closest to √(4.2(1,590)/15.7)? A. 20 B. 40 C. 60 D. 80 E. 100 Correct Answer: A Full explanation coming soon. Send us a note if you’d like this added to the express queue! You’ll find tons of practice questions, explanations for GMAT Official Guide questions, and strategies on our GMAT

During a trip that they took together, Carmen, Juan, Maria, and Rafael drove an average (arithmetic mean) of 80 miles each. Carmen drove 72 miles, Juan drove 78 miles, and Maria drove 83 miles. How many miles did Rafael drive? A. 80 B. 82 C. 85 D. 87 E. 89 Correct Answer: D Full explanation

The value of (7/8+1/9)/(1/2)  is closest to which of the following? A. 2 B. 3/2 C. 1 D. 1/2 E. 0 Correct Answer: A Full explanation coming soon. Send us a note if you’d like this added to the express queue! You’ll find tons of practice questions, explanations for GMAT Official Guide questions, and strategies

Over the past 7 weeks, the Smith family had weekly grocery bills of $74, $69, $64, $79, $64, $84, and $77. What was the Smiths’ average (arithmetic mean) weekly grocery bill over the 7-week period? A. $64 B. $70 C. $73 D. $74 E. $85 Correct Answer: C Full explanation coming soon. Send us a