S6tansmilaynafordyS S6tansmilaynafordyS

26-11-2016
Mathematics

Answered

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

A770

B670

C693

D686

Verified Answer :

JcAlmighty JcAlmighty

28-11-2016

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

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