You have two 8-years old twin children, and you anticipate that when they will turn 18 (exactly 10 years from now) they will need $500,000 to cover living and tuition college expenses. Suppose that the discount rate 10%. 2.Suppose, instead, that want to meet this negative cash flow only saving a constant amount at the end of each year, for the next 10 years. What is the amount you should set aside each year?