Im so confused plz help? Fractions?

15.0% of 1760 is .15*1760 (move the decimal two numbers to the left to convert a percentage to a multiplying fraction) = $264. The selling price is 1760+264 = $2024. The percentage GST from the final price is determined by the equation GST/Total price * 100(to convert it to a percentage) = 264/2024*100 = 13%