Answer:
tip = $ 15.48
total = $ 92.88
Step-by-step explanation:
[tex]\frac{Amount (part)}{Base (whole)} =\frac{percent}{100}[/tex]
[tex]\frac{x}{77.40} =\frac{20}{100}[/tex]
[tex]77.40 * \frac{x}{77.40} =\frac{20}{100} X\frac{77.40}{1}[/tex]
[tex]x =\frac{1548}{100}[/tex]
x = $ 15.48 (20% tip)
then you add the tip tp the cost of the meal for the total
$ 77.40 + $15.48 = $ 92.88
