SOLUTION: Mia�s scores on her four math tests were 87, 77, 68, 58. What does she need to make on the final ( which counts as two tests) to have an average of at least 80?

Question 1131162: Mia�s scores on her four math tests were 87, 77, 68, 58. What does she need to make on the final ( which counts as two tests) to have an average of at least 80?
Answer by ankor@dixie-net.com(22740) (Show Source): You can put this solution on YOUR website!
Mia�s scores on her four math tests were 87, 77, 68, 58.
What does she need to make on the final (which counts as two tests) to have an average of at least 80?
:
let n = her score on her final, which counts as 2 tests
:
= 80
290 + 2n = 6(80)
2n = 480 - 290
2n = 190
n = 190/2
n = 95% on the final
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