Admission Tests GRE Question Answer
The average (arithmetic mean) of a set of n test scores is 70. If a new score of 90 is added to the set. the average of the set of scores will be 72. What is the value of w?
Admission Tests GRE Question Answer
The average (arithmetic mean) of a set of n test scores is 70. If a new score of 90 is added to the set. the average of the set of scores will be 72. What is the value of w?