Shown are selected data from a recent annual report of CVS Health, a large drugstore chain. (Dollar amounts are in millions.)

	Beginning of the Year				End of the Year
Total assets	$	94,462			$	95,131
Total stockholders' equity		36,834				37,695
Operating income						9,517
Net income						6,623

a. Compute for the year CVS Health's return on average total assets.

b. Compute for the year CVS Healths return on average total stockholders equity.

(Do not round intermediate calculations. Round your percentage answers to 2 decimal places. i.e. 0.1234 as 12.34%.)