The following information provided by Golden Windows Inc on Dec.31 2018.

Sales	1,940,000
Operating expenses	980,000
Average Operating assets	3,950,000
Required Rate of Return	21%

Instructions:

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

Silver Windows Inc. planning to increase Average Operating Assets $500,000 during 2019. The estimations of managerial accountant that this investment will increase Net Sales by 60% and Operating Expenses 20%. Do you recommend this investment? Show your calculations