Selma and Patty Bouvier are twins and both work at the Springfield DMV. Selma and Patty Bouvier decide to save for retirement, which is 35 years away. They'll both receive an annual return of percent on their investment over the next 35 years. Selma invests per year at the end of each year only for the first 10 years of the 35-year periodfor a total of saved. Patty doesn't start saving for 10