SOLUTION: Joe received a 100 on one math test and 75 on the next. What grade does he have to receive on the next test in order to average an 85 on all three tests?

Algebra ->  Average -> SOLUTION: Joe received a 100 on one math test and 75 on the next. What grade does he have to receive on the next test in order to average an 85 on all three tests?      Log On


   

Question 449399: Joe received a 100 on one math test and 75 on the next. What grade does he have to receive on the next test in order to average an 85 on all three tests?
Answer by jorel1380(3719) About Me  (Show Source):
You can put this solution on YOUR website!
100+75+x/3=85
175+x=255
x=80
Joe needs an 80 to average 85 on all tests..