Susan’s test scores are 93, 85, 88, and 90. What does she need to score on the next test to raise her average to 90?

Answer 1

93 + 85 * 88 + 90 = 356

500*0.9 = 450

450 - 356 = ?

Answer 2

93 + 85 + 88 + 90 = 356