SOLUTION: marks test scores were 87, 87, 67,88,78 . what does he need on his next test to average 80?

SOLUTION: marks test scores were 87, 87, 67,88,78 . what does he need on his next test to average 80?

Algebra.Com

Question 555624: marks test scores were 87, 87, 67,88,78 . what does he need on his next test to average 80?
Answer by Alan3354(69443) (Show Source): You can put this solution on YOUR website!
marks test scores were 87, 87, 67,88,78 . what does he need on his next test to average 80?
------
An 80 average for 6 tests --> 6*80 = 480 points.
---
87 + 87 + 67 + 88 + 78 = 407
480 - 407 = 73 needed
=======================
What's the highest average he can make in the class?

RELATED QUESTIONS
His test scores were 80, 88, 71, and 75. After his next test he found his average to be... (answered by rfer)

Christina had scores of 78%, 87%, 67%, and 79%. What must she score on the fifth test... (answered by ewatrrr)

test scores are 80 96 78 87 what does 5th test score need to be to have average of... (answered by TP)

a student recieved test scores of 67, 78, 80, 85, 88, 90 and 100. What does sge need on... (answered by josmiceli)

Allanʹs 4 quiz scores in his math class are 87, 89, 88, and 78. What score does he need... (answered by josgarithmetic,math_tutor2020,MathLover1,amoresroy,greenestamps)

What must Sara get on here next test to average 80% if her previous test scores were 78,... (answered by checkley79)

Sariqs last test scores in history were 87, 85,91,and 88. What scores on his next test... (answered by solver91311)

Gabriel earns 87% on his first geography test. He wants to keep a 92% average. What does... (answered by JulietG)

Chang has scored 87,94 ,89 , and 93 on his previous four tests. What score does he need... (answered by TeishaRenee)