ple

Given is the following information:
    $ Millions
    2019
    2018
    2017
    NOPAT
    2688
    2792
    
    Net income
    2597
    2,640
    
    Total assets
    14,164
    13,978
    15,773
    Equity
    2,844
    3,059
    3,059
    Net operating profit after tax (NOA)
    8,337
    8,894
    9,484
    Treasury Stock
    19,551
    18,071
    16,029
a) Calculation of profitability...