SOLUTION: The average of 6 numbers is 19. A seventh number is added and the new average age is 20. What is the seventh number?

Algebra ->  Average -> SOLUTION: The average of 6 numbers is 19. A seventh number is added and the new average age is 20. What is the seventh number?      Log On


   

Question 980474: The average of 6 numbers is 19. A seventh number is added and the new average age is 20. What is the seventh number?
Answer by josgarithmetic(39621) About Me  (Show Source):
You can put this solution on YOUR website!
v, the seVenth number;
%286%2A19%2Bv%29%2F7=20