Can you please show me what formulas to use to answer these questions?
You want to withdraw $ 55,376 from your account at the end of one year and $ 10,744 at the end of the second year. How much should you deposit in your account today so that you can make these withdrawals? Your account pays 4 percent p.a.
You deposit $ 80,010 in your account today. You make another deposit at t = 1 of $ 62,704 . How much will there be in your account at the end of year 2 if the interest rate is 10 percent p.a.?
Your account pays interest at 11 percent p.a.. You deposit $ 28,649 in it today. You must have exactly $ 86,710 in the account at the end of two years. What should happen at the end of the first year (that is, what dollar amount must you deposit) to ensure this?