Halliburton and Schlumberger compete in the oil field services sector. Refer to the following 2018 financial data for the two companies to answer the requirements.

millions hal slb

total revenue $22795 $31,174

pretax net non operating expense 620 405

net income 1823 2395

average operating assets 25,697 74620

average operating liabilities 5,594 15,674

marginal tax rate 22% 19%

return on equity 18.56% 5.86%

a. Compute return on net operating assets (RNOA) for each company.

b. Disaggregate RNOA into net operating profit margin (NOPM) and net operating asset turnover (NOAT) for each company.

Do not round until your final answer. Round answers to two decimal places (percentage example: 0.12345 = 12.35%).