Need help homework due tomorrow

Answer:
14.5 kg
Step-by-step explanation:
Arrange the numbers in increasing order, which will give
8kg, 8kg, 14kg, 15kg, 17kg, 19kg
You then find the middle number(s), which is [14kg & 15kg] in this case.
Then you add the middle numbers and divide by 2, hence
[tex]\frac{14kg+15kg}{2} = \frac{29kg}{2} = 14.5 kg[/tex]