Apex Corp. is planning to buy production machinery costing RM100,000. This machinery's expected useful life is five years, with no residual value. Apex uses a discount rate of 10% and has calculated the following data pertaining to the purchase and operation of this machinery: Calculate the payback period of this investment. If Apex sets a cut-off period of 3 years, should this investment be undertaken? (5 marks) (d) Aaron Roger is planning to buy a house. He expects his budget to allow a monthly payment of RM1,800 on a 30 year mortgage with an annual interest rate of 5.4%. If Roger makes a 10 percent down payment, calculate the most he can pay for the house