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. Calculate Margin, Turnover and Return on Investment.
2. Calculate Residual Income.
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.