Question

You order an appetizer for $8.99, 2 entrees for $9.99 each, and a dessert for $5.49. The sales tax is 4% and you leave a 15% tip based on the bill with sales tax. What is your total cost of your restaurant outing?

Answer 1

1.04(8.99 + 2(9.99) + 5.49)
1.04(34.46) =
35.8384 rounds to 35.84.....this is the bill with the sale tax...no tip

and we are leaving a 15% tip
35.84 * 1.15 = 41.216 rounds to 41.22 <== total cost

Answer 2

8.99 + 9.99 + 9.99 + 5.49 = 34.46

4% of 34.46 is 1.3784
15% of 34.46 is 5.169
1.3784 + 5.169 = 6.5475
34.46 + 6.5475 = 41.0075

The total cost of the restaurant outing:
Exact: $41.0075
Rounded: $41