Assume that your parents wanfed to have $100,000 saved for university by your 18 th birthday and they started saving on your first birthday. They saved the same amount each year on your birthday and earned 11.5% per year or their investments a. How much would they have to save each year to reach their goal? b. If they think you will take five years instead of four to graduate and decide to have $140,000 saved, just in case. how much would they have to serve each year to reach their new goal