Question
George's scores on three math tests were 70, 90 and 75. What score does he need on the fourth test to have a final average of 80?
78
79
85
95
78
79
85
95
Answers
GPT 3.5
To achieve an average score of 80 on four tests, George's total points should be 320 (4 tests x 80 average).
He already has 70 + 90 + 75 = 235 points from the first three tests.
Therefore, he needs to score 85 on the fourth test to achieve a final average of 80.
He already has 70 + 90 + 75 = 235 points from the first three tests.
Therefore, he needs to score 85 on the fourth test to achieve a final average of 80.