The parents of a young child decide to make equal annual payments into a savingsaccount, with the first payment being made on the child's fifth birthday and the last payment being made on the fifteenth birthday. Then a rotal of four withdrawals of &10000 each will be made on the child's 18th .19th,20th, birthdays. If the effective annual interest rate is 10% during this period of time, compute the annual payment of the savings account.