Question

Sheryl's mean average on eight exams is 83.750. Find the sum of her scores.
A. 770

B. 670

C. 693

D. 686

Answer 1

do you know how an average of a set of numbers is calculated?

Answer 2

no

Answer 3

ok, I would suggest that you first learn that concept and then come back to this problem.
here is a good site for learning about averages: http://www.basic-mathematics.com/finding-the-average.html