SOLUTION: The average of four numbers is 85. If three of the numbers are 79, 80 and 65, find the fourth number.

Algebra ->  Average -> SOLUTION: The average of four numbers is 85. If three of the numbers are 79, 80 and 65, find the fourth number.      Log On


   

Question 279142: The average of four numbers is 85. If three of the numbers are 79, 80 and 65, find the fourth number.
Answer by mananth(16946) About Me  (Show Source):
You can put this solution on YOUR website!
The average of four numbers is 85. If three of the numbers are 79, 80 and 65, find the fourth number.
Let the number be x
x+224 / 4 =85
x+224= 340
x=340-224=116
the number =116