Answer: $26.16
Explanation:
Total cost = Meal cost + Sales tax + Gratuity after sales tax
Sales tax = 9% * 20
= $1.80
Gratuity after sales tax is added = 20% * (20 + 1.80)
= $4.36
Total cost = 20 + 1.80 + 4.36
= $26.16
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