Question

Fred earned an average score of 90 points on math tests last semester. So far this semester, his average score is 10% higher. What is the average of Fred's scores this semester?

(A) 99
(B) 100
(C) 101
(D) 102

Answer 1

Fred's average score this semester is 99 points, calculated by increasing his previous average score by 10%, which equals a 9 point increase on his last semester's average of 90 points.

Step-by-step explanation:

Fred earned an average score of 90 points on math tests last semester. This semester, his average score is 10% higher than last semester. To calculate this, we take 10% of 90, which is 9, and add that to his original average, giving us an increased average score of 99 points.

Therefore, the average of Fred's scores this semester is 99 points.