SOLUTION: I had a question like this "if you have an 85, 78, 90, and an 86, what score do I need to have an average of 89." How do I solve this?
Algebra ->
Average
-> SOLUTION: I had a question like this "if you have an 85, 78, 90, and an 86, what score do I need to have an average of 89." How do I solve this?
Log On
Question 517307: I had a question like this "if you have an 85, 78, 90, and an 86, what score do I need to have an average of 89." How do I solve this? Answer by josmiceli(19441) (Show Source):
You can put this solution on YOUR website! What should your next score be?
Let the next score =
The definition of average is:
( sum of the scores ) / ( number of tests )
average =
You need a score of 106
