Solve the problem.
-Libby's 4 quiz scores in her math class are 89, 93, 88, and 79. What score does she need to obtain on her next quiz to average an 85? Round to the nearest whole number if necessary.
A) 66
B) 76
C) 83
D) 70

Question

Quizplus · Accepted Answer

To find the score Libby needs on her next quiz to average an 85, first find the total points she currently has: 89 + 93 + 88 + 79 = 349. To average 85 over 5 quizzes, she needs a total of 5 * 85 = 425 points. Subtracting her current total from this gives 425 - 349 = 76.

Solve the Problem. -Libby's 4 Quiz Scores in Her Math Class Are 89