The total amount that you need to pay for the lunch after the sales tax and the tip will be $ 42.85.
We are given that:
The cost of lunch = $ 32
Sales tax = $ 4.45
Tip = 20 %
So, the tip will be calculated by finding the percentage of cost that you are planning to pay has a tip.
Tip = 20 % of $ 32
Tip = 20 / 100 × $ 32
Tip = 0.2 × $ 32
Tip = $ 6.4
Total amount needed to be paid for the lunch = $ 32.00 + $ 4.45 + $ 6.40
Total amount = $ 42.85
Therefore, we get that, the total amount that you need to pay for the lunch after the sales tax and the tip will be $ 42.85.
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