Answer all questions. Write your answer in the separate answer file. (Show your workings) 1. Mary gets $100 on the first day of every month. Peter, on the other hand, obtains $100 on the last day of every month. Both Mary and Peter will get this amount of money for five years. Suppose the annual discount rate is 8%, calculate the difference of the total present value of what Mary receives and Peter's? (20 marks)