hello need help with cost according homework

Exercise 12-22Return on Investment, Margin, Turnover

Data follow for the Construction Division of D. Jack Inc.:

Year 1

Year 2

Sales

$148,500,000

$162,250,000

Operating income

8,910,000

8,112,500

Average operating assets

337,500,000

405,625,000

(Note:Round all answers to two decimal places.)

Required:

• 1.Compute the margin and turnover ratios for each year.
• 2.Compute the ROI for the Construction Division for each year.