Can't figure out finance questions for several homeworks

Question 8
        Amount (in Million)
    Inventory    $7.50
    Depreciation    $5.20
Question 9
        In Million

        Book Value    Market Value
    Current Assets    $20.00    $18.25
    Fixed Assets    $24.00    $39.00
    Total    $44.00    $57.25
Question 10
        No Equity    NoDebt
    Operating Income    $15.50    $15.50
    Less: Interest    $6.90    0
    PBT    $8.60    $15.50
    Less: Tax    $1.81    $3.26
    Net Income    $6.79    $12.25
    Return on Assets    9.71%    17.49%
    Answer
    Net Income    $6.79    $12.25
    Return on...