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48 › McGraw Hill 500 GRE® Math Questions
In a population of 320 employees of a manufacturing plant, the mean 
salary is $55,000 and the median salary is $48,000.
 113. Quantity A Quantity B
 The number of employees with The number of employees with 
 salaries greater than $48,000 salaries greater than $55,000
 (A) Quantity A is greater.
 (B) Quantity B is greater.
 (C) The two quantities are equal.
 (D) The relationship cannot be determined from the information given.
In a set of 50 numbers, the mean is 15 and the median is 20.
 114. Quantity A Quantity B
 The percent of the numbers between 15 and 20 5%
 (A) Quantity A is greater.
 (B) Quantity B is greater.
 (C) The two quantities are equal.
 (D) The relationship cannot be determined from the information given.
Set A consists of 20 numbers ranging from 1 to 10. Set B consists of 20 
numbers ranging from 11 to 20. The average (arithmetic mean) of the 
numbers in Set A is 6.8 and the average of the numbers in Set B is 17.2.
 115. Quantity A Quantity B
 The average of the 40 numbers in The median of the 40 numbers in 
 sets A and B combined sets A and B combined
 (A) Quantity A is greater.
 (B) Quantity B is greater.
 (C) The two quantities are equal.
 (D) The relationship cannot be determined from the information given.
 116. Quantity A Quantity B
 The 90th percentile of the data set 750 
 0,0,0,0,100,100,100,100,1400 
 (A) Quantity A is greater.
 (B) Quantity B is greater.
 (C) The two quantities are equal.
 (D) The relationship cannot be determined from the information given.
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