Answer:
5a:16.67%
5b:69.23%
6a:100%
6b:100%
7a:66.67%
7b:0
8a:54
8b:0%
Step-by-step explanation:
Average weight
7.79
1.49714285714
6/7+4/5*4/5
=6/7+0.64
=1.49714285714
$79
That's the Khan Academy answer
