Question

A student has scores of 87​, 81​, 96​, and 79 on four quizzes. What must she score on the fifth quiz to have an average of at least 86​?

Answer 1

Answer:

87 points.

Step-by-step explanation:

A student has scores of 87, 81, 96, and 79 on four quizzes.

The sum of the four scores = 87 + 81 + 96 + 79 = 343

In order to have an average of atleast 86 in five quizzes, then the student must make a total of 86 × 5 = 430

Since she has a total of 343 in the four quizzes, then she must score 430 - 343 = 87  in the fifth quiz (so that she makes an average of 86 in the five quizzes).