Question

Olivia goes out to lunch. The bill, before tax and tip, was $13.90. A sales tax of 6% was added on. Olivia tipped 23% on the amount after the sales tax was added. How much was the sales tax? Round to the nearest cent.

Answer 1

According to the information given in the exercise, the bill before the tax and tip was $13.90 and the sales tax of 6% was added to that amount.

By definition, you can write 6% as a Decimal number by dividing it by 100. Then, this is:

`(6)/(100)=0.06`

Let be "t" the amount (in dollars) of the sales tax.

To find the value of "t", you can set up the following equation:

`t=(13.90)(0.06)`

Finally, evaluating, you get that this is:

`t=0.834`

Rounded to the nearest cent, this is:

`t\approx0.83`

The answer is: $0.83