Question

You and 4 friends go to a restaurant to eat. The bill comes to a total of $110 before tax and tip. You want to leave a 20% tip for the $110 bill. You must also pay an 8.25% tax on the $110 bill. After you include the tax and tip, what is the price of the bill? Write out your process for solving this problem. Explain exactly what you do.

Answer 1

Bill = $110.

Tip: 20% So:

$\begin{gathered} If\text{ \ 110 - 100\%} \\ Then\text{ x- 20\%} \\ x=\text{ }\frac{\lparen20\%\rparen\lparen\ 110\rparen}{100} \\ \\ x=\frac{2200}{100} \\ \\ x=\text{ \ 22} \end{gathered}$

Tax: 8.25%

$\begin{gathered} If\text{ \ 110 -100\%} \\ Then\text{ x - 8.25\%} \\ \\ x=\frac{\lparen8.25\%\rparen\lparen\ 110\rparen}{100\%} \\ \\ x=\frac{907.5}{100} \\ \\ x=\text{ \ 9.075} \end{gathered}$

Therefore, they will pay $22 in tips and $9.075 in taxes. Therefore the final price of the bill will be:

$110\text{ + 22 + 9.075 = \ 141.075}$