you are planning to buy 2 securities the first makes equal annual payments of $15,000 per year for ever with the first payment received 18 years from today. The second makes equal annual payments of $5,000 forever with the first payment received 8 years from today. How much would you have to pay for this security today if you plan to make one payment today and another payment of $20,000 3 years from today. Assume the interest rate is currently 12%