Roberto Co. is considering an investment that will cost $4,000,000 to implement. The initial investment will be depreciated over the four-year life of the project. It will increase the operating profit by $1,000,000 per year for the next four years. Robredo Co. has a cost of capital of 10% per annum. Required (a) Calculate the following: (1) The payback period (ii) The return on the initial investment (i) The return on the average investment (iv) The present value using an interest rate of 10% (b) Is the investment worthwhile