food bill before tax $30 sales tax 6.4% tip 15%

Food bill = $30

Sales Tax = 6.4% of $30 = 0.064 x 30 = $1.92

Tips = 15% of $30 = 0.15 x 30 = $4.50

Total = $30 + $1.92 + $4.50 = $36.42

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Answer: Total bill is $36.42
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