(13 + 9) ÷ 2 = 11
It is: 13+9+11 = 33 and 33/3 = 11 which is the mean average
Average = (9+13)/2 = 22/2 = 11
13. (9+17)/2=13
The average is 13.
13
The average is 15.
9
9 and 14!
Average = 13
the answer is twelve
7 + 9 + 11 = 27. Divide by 3. = 9.
85-120lbs on average..