Problem 2 (20) The monthly direct costs are shown in bar chart and the monthly indirect costs is $10k for each month. The contractor has a 20% markup and the owner only retains 5% of all validated progress payments on the first 50% of worth. The interest is 1% per month of the amount of the overdraft at the end of the month. The payments are billed at the end of month and received one month later. $ 20k A $ 40k B $ 30k C $ 120k D Jan. Feb. Mar. Apr. 1. Develop the cash flow diagram. (5) 2. What is the peak financial requirement and when does it occur? (5) 3. Assume the same as in (1) and (2), except that the owner will retain 10% instead of 5%. Plot the cash flow diagram and calculate the ROR on the invested money