a) Winston deposits $A in an account today. He plans to withdraw $200 at the beginning of every year for 15 years, first withdrawal today. The account earns j2 = 6% for the first 8 years and j2 = 4% thereafter. What is the value of A? b) Deposits of $300 are made at the end of each month for five years into an account that earns interest at j2 = 5%. The account credits simple interest for fractional periods. What is the accumulated value of this account just after the 60th monthly deposit is made