SOLUTION: Miguel scored 78,92,88 on three math exams what must his average be on the next two exams so all his five exam can have an 80 for an overall score

Algebra ->  Average -> SOLUTION: Miguel scored 78,92,88 on three math exams what must his average be on the next two exams so all his five exam can have an 80 for an overall score       Log On


   



Question 831965: Miguel scored 78,92,88 on three math exams what must his average be on the next two exams so all his five exam can have an 80 for an overall score

Answer by JulietG(1812) About Me  (Show Source):
You can put this solution on YOUR website!
78 + 92 + 88 +2x = 80*5 (5 exams)
258 + 2x = 400
Subtract 258 from each side
2x = 142
Divide each side by 2
x = 71
.
Miguel must score an average of 71 on each of the next two exams.