There are several information's already given in the question. Based on those information's, the answer can be easily deduced.
Cost of the jacket = $124.99 Percentage of discount given at the beginning = 10% Amount of initial discount given = (10/100) * 124.99 = 12.499 dollars = 12.50 dollars Then Price of the jacket after the initial discount = 124.99 - 12.50 = 112.49 dollars Percentage of additional discount = 20% Amount of additional discount = (20/100) * 112.49 = 22.50 dollars Total amount saved on buying the jacket = 12.50 + 22.50 = 35 dollars I hope that this is the answer that you were looking for and the answer has actually come to your desired help.