m3-32 Compute ROA and adjusted ROA

Tthe following information was reported by RR Donnelly & Sons in its form 10-k. Use this information to answer the requirements.

$ in millions

$ in millions	December 31,2015	December 31, 2014
Net income	$138.4	$120.8
Interest expense, Net	204.1	211.2
Average Total Assets	7,444.1	7,438.8

a.What managerial insight does the 'adjusted return on assets' ratio offer as compared to the usual roa metric?

b. Compute (i) return on assets, and (ii) the adjusted return on assets, for each year (iii) are the two ratios materially different from each other? Explain