Solution:
Activity Units Units cost Cost of Goods Available
Beginning Inventory 11 $65.00 $715
1st week purchase 11 $66.00 $726
2nd week purchase 11 $67.00 $737
3rd week purchase 11 $70.00 $770
4th week purchase 11 $75.00 $825
Units available for sale 55
Cost of goods available for sale $3,773