To get an A in a course, you must have an average of at least 90% on four tests worth 100 points each.

Question

Your scores on the first three tests were 84, 94, and 83. What must you score on the fourth test to get an A in the course?

Answer 1

You need a total of 360 points (4 * 90)

Subtract current scores from 360.

 

And this is a pre-calculus question?