Jesse buys his coworkers lunch from the local steakhouse. The food costs $105.79, and the sales tax

Question

rate is 9%. Jesse wants to leave a 20% tip based on the pre-tax amount. How much will the total be,
including tax and tip?

Answer 1

To calculate the total cost of Jesse's lunch including tax and tip, we'll break it down into steps.

1. Calculate the sales tax:

   • Sales tax = Cost of food × Sales tax rate
   • Sales tax = $105.79 × 0.09
   • Sales tax = $9.4771, which rounds to $9.48 for practical purposes.

2. Calculate the total cost including tax:

   • Total cost including tax = Cost of food + Sales tax
   • Total cost including tax = $105.79 + $9.48
   • Total cost including tax = $115.27

3. Calculate the tip based on the pre-tax amount:

   • Tip = Cost of food × Tip rate
   • Tip = $105.79 × 0.20
   • Tip = $21.158, which rounds to $21.16 for practical purposes.

4. Calculate the final total including tip:

   • Final total = Total cost including tax + Tip
   • Final total = $115.27 + $21.16
   • Final total = $136.43

Therefore, the total amount Jesse will pay, including tax and tip, is $136.43.