Question

You and your family go to dinner at a local restaurant in Rexburg, Idaho and your online banking report shows that the total dinner bill (food, tax, and tip) was for $36. Suppose that you did not keep your receipt, but you remember you paid a 15% tip for the service. What was your bill prior to calculating the tip (that is, for food and tax only)?

Answer 1

Answer:

$ 31.30

Step-by-step explanation:

The bill for food, tax and tip = $ 36

let the y be the amount paid for food and tax

y + 0.15 y = $ 36

1.15 y = $ 36

y = $ 36 / 1.15 = $ 31.30