SOLUTION: john has an 88 average on his last 6 tests. if there are two tests left in the class he is taking, what must his average on these two tests be in order that his final average for a

Algebra ->  Average -> SOLUTION: john has an 88 average on his last 6 tests. if there are two tests left in the class he is taking, what must his average on these two tests be in order that his final average for a      Log On


   

Question 539327: john has an 88 average on his last 6 tests. if there are two tests left in the class he is taking, what must his average on these two tests be in order that his final average for all 8 tests to be 90?
Answer by josmiceli(19441) About Me  (Show Source):
You can put this solution on YOUR website!
( total of 6 tests ) / 6 = 88
total of 6 tests = 88*6
+88%2A6+=+528+
Let x = total score of next 2 tests
+%28+528+%2B+x+%29+%2F+8+=+90+
+528+%2B+x+=+720+
+x+=+720+-+528+
+x+=+192+
+192%2F2+=+96+
The average for the next 2 tests must be 96