Selected balance sheet and income statement information for Home Depot follows.

$ millions	Jan. 31, 2016	Feb. 01, 2015
Operating assets	$40,583	$38,473
Nonoperating assets	2,241	1,748
Total assets	42,824	40,221
Operating liabilities	15,018	13,527
Nonoperating liabilities	21,285	17,167
Total liabilities	36,303	30,694
Sales	88,999
Net operating profit before tax (NOPBT)	12,024
Nonoperting expense before tax	778
Tax expense	4,088
Net income	7,158

Round answers to two decimal places (ex: 0.12345 = 12.35%).

a. Compute return on net operating assets (RNOA). Assume a statutory tax rate of 37%. Answer

%

b. Disaggregate RNOA into components of profitability and productivity and show that the product of the two components equals RNOA. Assume a statutory tax rate of 37%. NOPM Answer

% NOAT Answer