Solve the problem.
-Sparky has scores of 71, 60, and 69 on his first three Sociology tests. If he needs to keep an average of 70 to stay eligible for lacrosse, what scores on the fourth exam will accomplish this?
A) He must score more than 84
B) He must score 84 or higher.
C) He must score 80 or higher.
D) He must score more than 80

Question

Quizplus · Accepted Answer

To find the score needed on the fourth test to maintain an average of 70, calculate the total score needed for four tests: 70 * 4 = 280. Sparky's current total is 71 + 60 + 69 = 200. Therefore, he needs 280 - 200 = 80 on the fourth test to achieve an average of 70.

Solve the Problem. -Sparky Has Scores of 71, 60, and 69 on His