Question

Trisha wants to achive a test avarage of 90 in her math class. She has scored 92, 78, 96, and 93 points on her first four test. how many points will she need to score on test 5 to end up woth a mean score of exactly 90?

Answer 1

97

Explanation:

To end off with a mean of exactly 90, she will need a total of 90 x 5 = 450 points on her 5 tests.

In order to get 450 total points she will need to score 450 - 92 - 78 - 96 - 93 = 97 points

Answer 2

91 points

Explanation:

the average of 92, 78, 96, 93, and 91 is 90