a. An heir is to receive an inheritance of $2000 each half year for 10 years. If the money is worth 10% p.a. compounded semi-annually, what is the cash value of this inheritance today if each payment is received at the end of each 6-month period? b. A television set worth $2780 may be purchased by paying quarterly instalments, payable at the beginning of each quarter, for 2 years. Find the quarterly instalment if interest is charged at 16% p.a. compounded quarterly? c. Charlie Brown deposits $500 at the end of each quarter with a credit union that pays interest at the rate of 10% p.a. compounded quarterly. How much does he have in his account after 5 years