Question

If Sam has a average test score of 87.5, what does he need to get an average of 85

Answer 1

He needs an 82.5 to have an average of 85.

Explanation:

85 times 2 is 170. That is how many points he needs from 2 tests to have the average of 85. 170-87.5 is 82.5. To double check and make sure you are right, add 82.5 and 87.5 and divide your answer by 2. You should get 85.