It costs $122.4 dollars before the increase.
How to calculate percentage of a number. Use the percentage formula: P% * X = Y
- Convert the problem to an equation using the percentage formula: P% * X = Y.
- P is 17%, X is 7.20, so the equation is 17% * 7.20 = Y.
- Convert 10% to a decimal by removing the percent sign and dividing by 100: 10/100 = 0.10.
Therefore, It costs $122.4 dollars before the increase.
Learn more about Finding the Percentage here:
https://brainly.com/question/24862040
