Sierra left $4. 50 as a tip for a waiter. This was 18% of the bill before the tip. How much was her total bill before the tip?.

Total amount of bill is $25.

Step-by-step explanation:

Given information:

The amount of tip = $4.50

The percentage given = 18%

Let total amount is

As the tip is 18% of the total bill;

Then,

We can write:

Total amount of bill is $25.

-100

it is not a mistake this movie hurts my eyes