To maintain eligibility, an athlete needs a test average in math class of 75%. There are six tests in the class. On the first five tests, the athlete scored 82%, 70%, 64%, 73%, and 71%. Find the score needed on the last test to have a test average of 75%. .
A) 90%
B) 88%
C) 86%
D) 84%

Question

Quizplus · Accepted Answer

The athlete needs an average of 75% on six tests. The athlete has already taken five tests and has an average of (82+70+64+73+71)/5 = 72%. To get an average of 75% on six tests, the athlete needs to score (75*6 - 72*5)/1 = 90% on the last test.

To Maintain Eligibility, an Athlete Needs a Test Average in Math