Question

Vincent wants to earn an A in Algebra which is an average of at least 90 but not

more than 100. What range must he score on the fourth exam if the first three
were 87, 89, and 90? Write you answer as a statement.

Answer 1

Answer: 94

Explanation:

Vincent’s grade depends on a total of 4 tests with an average of 90. That means that all his scores added together must be at least 360 (4·90) for it to reach the target average. After subtracting all the other test scores, you should be left with the score he needs.

360-87-89-90=94