SOLUTION: Kyle made scores of 85, 56, 91 on his first three test. What does he have to make in his next test to have an 80 test average?

Question 943554: Kyle made scores of 85, 56, 91 on his first three test. What does he have to make in his next test to have an 80 test average?
Answer by macston(5194) (Show Source): You can put this solution on YOUR website!
To average 80 points over 4 tests, the sum of the scores must be 4(80)=320 Sum for 80 average.
Kyle's first three scores total 85+56+91=232 Current sum
Sum for AVG 80- Current sum = Required score for next test
320-232=88
ANSWER Kyle must score 88 on his next test to average 80
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