A company wants to have $20,000at the beginning of each 6-month period for the next 4 1/2 years. If an annuity is set up for this purpose, how much must be invested now if the annuity earns6.13%, compounded semiannually?(a) Decide whether the problem relates to an ordinary annuity or an annuity due.

ordinary annuityannuity due

(b) Solve the problem. (Round your answer to the nearest cent.)