Question

Camille took a friend for a birthday dinner. The total bill for dinner was $38.56 (including tax and a tip). If Camille paid a 22.1% tip, what was her bill before adding the tip?

(Round your answer to the nearest cent.)

Answer 1

Answer: $31.58

Explanation:

Let us say that x is equal to the bill's amount before adding the tip. Please note that a percent divided by 100 becomes a decimal, so 22.1% / 100 = 0.221. We will write an equation to represent this situation.

x + 0.221x = $38.56

Next, we will solve by combining like terms.

1.221x = $38.56

Lastly, we will divide both sides of the equation by 1.221.

x = $31.58

Camille's bill was $31.58 before adding a 22.1% tip.