Answer: 6.65
Explanation:
Cost 10.50$
Markup 10% Of 10.50 is 1.05.
Discount: 40 percent of 10.55 is 4.22 So if we subtract 10.55 by 4.22, we get 6.33.
Tax 5% 5 percent of 6.33 is 0.3165
OK so now we have all of our numbers we can add 6.33 and 0.3165
6.33
0.3165
6.6465
Simplified its 6.65 or 6.7