SOLUTION: Claire has received scores of 85, 88, 87, and 80 on her algebra tests. What is the minimum score she must receive on the fifth test to have an overall test score average of at lea

Algebra ->  Average -> SOLUTION: Claire has received scores of 85, 88, 87, and 80 on her algebra tests. What is the minimum score she must receive on the fifth test to have an overall test score average of at lea      Log On


   



Question 638678: Claire has received scores of 85, 88, 87, and 80 on her algebra tests. What is the minimum score she must receive on the fifth test to have an overall test score average of at least 82?
Answer by josmiceli(19441) About Me  (Show Source):
You can put this solution on YOUR website!
Let the minimum score she needs = +x+
+%28+85+%2B+88+%2B+87+%2B+80+%2B+x+%29+%2F+5+=+82+
Multiply both sides by +5+
+85+%2B+88+%2B+87+%2B+80+%2B+x+=+410+
+340+%2B+x+=+410+
+x+=+70+
She must score at least 70