Correct Answer: B
Explanation:
Usman’s average (arithmetic mean) for 3 tests was 85. The average is his scores for the first 2 tests was also 85. What was his score for the third test?
Sum of score of three tests = 3 × 85 = 255
Sum of score of two tests = 2 × 85 = 170
Score of the third test = 255 - 170 = 85