Engineering Economic Analysis 265 n an investment plan by putting $10,000 in an account that you assume will pter 9 invest 19. You begin annually. For the next 25 years, you add $5000 per year. In anticipation of y. earno ment of $55,000 at t a. Draw a house with a I5-year mortgage, you expect to need a one-time down pay ment without affecting the yearly contribution to the savings plan discrete, nondiscounted cash flow diagram for this situation te,r Will b. you have the down payment a t the end of year 8? be the value of your savings account at the end of year 25? c. What wi