Question

imagine you have taken 4 unit test.Thus far,you have scored a 82%,90%,88%, and x%.You know have a test average of a 78%.What did you scored on that fourth test?

Answer 1

You scored a 52% on the fourth test.

Explanation:

.78=(.82+.90+.88+x)/4

.78=(2.6+x)/4

3.12=2.6+x

.52=x