Question

A student must have an average of at least 80 points on five tests to receive a B in a course. The student's grades on the first four test were 77, 85, 85, and 77. What scores on the last test will enable this student to receive a B or better in the course?

answer impute is (score) or better.

Answer 1

Answer: A

Explanation:

Answer 2

Answer: 78
Solution:
Average of 80 points on 5 subjects

= 80*5=400(num. of points to get a B)

Students grades: 77+85+85+77+ x =400
=322x = 400
x =400-322
x = 78