GRE Math Quantitative Comparisons Question 636
The average (arithmetic mean) of 9 numbers is 90. The average (arithmetic mean) of the first 5 0f these numbers is 50.
The average (arithmetic mean) of the last 4 numbers
- 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.
Correct Answer: A