SOLUTION: Peter took five tests. The average of four of the tests is 84. What score did he get on his fifth test if the average of the five tests is 80? a 64 b 70 c 80 d

Algebra ->  Average -> SOLUTION: Peter took five tests. The average of four of the tests is 84. What score did he get on his fifth test if the average of the five tests is 80? a 64 b 70 c 80 d      Log On


   

Question 317105: Peter took five tests. The average of four of the tests is 84. What score did he get on his fifth test if the average of the five tests is 80?

a 64 b 70 c 80 d 82 e 84
Answer by Fombitz(32388) About Me  (Show Source):
You can put this solution on YOUR website!
+%28A%2BB%2BC%2BD%29%2F4=84+
A%2BB%2BC%2BD=336
.
.
%28A%2BB%2BC%2BD%2BE%29%2F5=80
A%2BB%2BC%2BD%2BE=400
336%2BE=400
highlight%28E=64%29
.
.
He got an 64 on the last test.