[10] Calculate the Macaulay duration D(0.6,00) and the modified duration D(0.6, 1) of a perpetuity, assuming that the first payment, payable in exactly one year, is $100 and then, then subsequent payment is 2% more than the previous one. [10] Calculate the Macaulay duration D(0.6,00) and the modified duration D(0.6, 1) of a perpetuity, assuming that the first payment, payable in exactly one year, is $100 and then, then subsequent payment is 2% more than the previous one