SOLUTION: a student recieved test scores of 67, 78, 80, 85, 88, 90 and 100. What does sge need on the 8th test to have a final average of 85?

Algebra ->  Average -> SOLUTION: a student recieved test scores of 67, 78, 80, 85, 88, 90 and 100. What does sge need on the 8th test to have a final average of 85?      Log On


   



Question 557654: a student recieved test scores of 67, 78, 80, 85, 88, 90 and 100. What does sge need on the 8th test to have a final average of 85?
Answer by josmiceli(19441) About Me  (Show Source):
You can put this solution on YOUR website!
+%28+67+%2B+78+%2B+80+%2B+85+%2B+88+%2B+90+%2B+100+%2B+x+%29+%2F+8+=+85+
+%28+588+%2B+x+%29+%2F+8+=+85+
+588+%2B+x+=+680+
+x+=+680+-+588+
+x+=+92+
The 8th test should be 92