The following information provided by Silver Doors Inc on Dec.31 2019. Sales 2,400,000 Operating expenses 1,600,000 Average Operating assets 4,000,000 Required Rate of Return 24% Instructions: 1. Caloplate Margin, Turnover and Return on Investment. (6 points) 2. Calculate Residual Income (4 points) 3. Silver Doors Inc. planning to increase Average Operating Assets $2,000,000 during 2020. The estimations of managerial accountant that this investment will increase Net Sales by 60% and Operating Expenses 30%. Do you recommend this investment? Show your calculations. (6 points)