SOLUTION: average of 10 numbers is 60, after adding 80, what would be the new average?

Algebra ->  Average -> SOLUTION: average of 10 numbers is 60, after adding 80, what would be the new average?       Log On


   

Question 832205: average of 10 numbers is 60, after adding 80, what would be the new average?
Answer by JulietG(1812) About Me  (Show Source):
You can put this solution on YOUR website!
If the average is 10, then there are 600 points total.
Add 80, and now you have 680. Divide it by 11 (because you added the 1 number)
to get 680 / 11 = 61.818 (repeats the 81 forever)