Explanation:
5.
The initial cost is $65.42
25% of 65.42 is 16.355
Add 16.355 + 65.42 and the total cost is: $81.78
6.
The initial cost is $12.50
3.2% of 12.50 is 0.4
Add 0.4 + 12.50 and the total cost is: $12.90
