# The price of a family dinner was $48.00. A sales tax added 5% to the final bill. The family left a$10.08 tip. If the family included the sales tax when calculating the tip, what percent did the family leave? A. 2% B. 10% C. 18% D. 20%

Question
Fractions
The price of a family dinner was $48.00. A sales tax added 5% to the final bill. The family left a$10.08 tip. If the family included the sales tax when calculating the tip, what percent did the family leave?
A. 2%
B. 10%
C. 18%
D. 20%

2021-03-09
The sales tax is $$\displaystyle{0.05}{\left(\{48.00}\right)}=\{2.40}$$ so the total considered by the family was $$\displaystyle\{48.00}+\{2.40}=\{50.40}$$. So, the family left a tip of:
$$\displaystyle\\frac{{10.08}}{\}{50.40}={0.2}={20}\%$$

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