The Norris

The Norris family goes out for lunch, and the price of the meal is 52. The sales tax on the meal is 6% and the family also leaves a 20% tip on the pre-tax amount. What is the total cost of the meal?

Correct answer:

x =  65.52

Step-by-step explanation:

$$\begin{gathered} a=52 \\ {q}_1=6\mathrm{\%}={\displaystyle \frac{6}{100}}=0.06 \\ {q}_2=20\mathrm{\%}={\displaystyle \frac{20}{100}}=0.2 \\ x=a\cdot (1+q_1+q_2)=52\cdot (1+0.06+0.2)=65.52 \end{gathered}$$

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