Question

uma wanted to have a test average of 85%. On her first 7 tests she averaged 83% on her tests. what does she need to get on her 8th test to have an overall average of 85%

Answer 1

99%

Explanation:

83% * 7 tests = 581

`(581+x)/(8) =85`

solve for x (the percentage needed on the 8th test)

x = 99%