Calculate Apple’s ROI, showing margin and turnover, for the years ended September 26, 2020, and September 28, 2019.

To calculate Apple's ROI (Return on Investment), we need two key pieces of information: Net Profit and Total Investment. However, these figures are not provided in your question.

The formula for ROI is:

ROI = (Net Profit / Total Investment) * 100%

Margin and turnover are not directly used in the calculation of ROI.

Margin is calculated as:

Margin = (Net Profit / Sales) * 100%

Turnover is calculated as:

Turnover = Sales / Total Assets

To calculate these figures for Apple for the years ended September 26, 2020, and September 28, 2019, you would need to have Apple's financial statements for these years, specifically the income statement and the balance sheet.

Once you have these, you can plug the numbers into the formulas to get the ROI, margin, and turnover.

Please note that these calculations will give you a simplified view of Apple's financial performance. For a more detailed analysis, you may need to consider other factors such as market conditions, industry trends, and the company's strategic initiatives.