A person want to buy a life insurance policy which would yeild a large enough sum of money to provide for 20 annual payments of 50000 to surviving members of th family the payments would begin 1 year from the time of death.it is assumed that interest could be earned on the sum recieved from the policy at a rate of 8% per year compunded annully .what amount of inssurance should be taken out so as to ensure the desired annuity ? How much interest will be earned on the policy benefit over the 20 year period ?