Sheryl's mean average on eight exams is 83.750. Find the sum of her scores. A. 770 B. 670 C. 693 D. 686

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asked Sep 1, 2017 201k views

1 Answer

Arman Feyzi · Answer 1 · 2017-09-06T20:46:08+0000

The answer is B. 670

The mean average (X) is sum (s) of the values divided by the number of values n:
X = s / n

X = 83.750
n = 8
s = ?

s = X * n
s = 83.750 * 8 = 670

Sheryl's mean average on eight exams is 83.750. Find the sum of her scores. A. 770 B. 670 C. 693 D. 686

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