Question

Akshi has five exam scores of 100, 96, 81, 82, and 86 in her history class. What score does she need on the final

exam to have a mean grade of 90? Round your answer to two decimal places, if necessary. (All exams have a
maximum of 100 points.)

Answer 1

95

Explanation:

Mean is average of the exam scores

If mean grade is 90 for 6 scores, total scores will be 90x6 = 540

100+ 96 + 81 + 82 + 86 + score = 540

445 + score = 540

Score = 450 - 540

Score = 540 - 445

Score = 95

She needs additional to make 95on the last score.