. . . EXHIBIT 12.1 COMPUTATION OF RATIO OF EARNINGS TO FIXED CHARGES CALCULATED USING AUSTRALIAN GAAP FINANCIAL DATA Fiscal Year Ended Six Months Ended June 30, December 31, ------------------------------------------------------------ -------------------- 1999 2000 2001 2002 2003 2002 2003 ------- ------- ------- ------- ------- ------- ------- (A$ million, except for ratios) Net profit (loss) from continuing operations before extraordinary items, income taxes and minority interests $ 55.9 $ 81.3 $ 81.8 $ 101.9 $ 127.8 $ 54.6 $ 111.0 Share of net profit of associates (10.5) (11.6) (12.4) (10.1) (11.1) (5.3) (6.4) Dividends received from associates 5.3 7.8 8.6 15.3 12.7 4.5 4.2 ------- ------- ------- ------- ------- ------- ------- $ 50.7 $ 77.5 $ 78.0 $ 107.1 $ 129.4 $ 53.8 $ 108.8 ------- ------- ------- ------- ------- ------- ------- Fixed charges: Borrowing costs $ 111.9 $ 90.9 $ 95.8 $ 72.9 $ 174.8 $ 63.6 $ 144.7 Estimated interest in rental Payments 2.9 2.1 2.2 1.7 4.0 1.0 3.5 ------- ------- ------- ------- ------- ------- ------- Total fixed charges $ 114.8 $ 93.0 $ 98.0 $ 74.6 $ 178.8 $ 64.6 $ 148.2 ------- ------- ------- ------- ------- ------- ------- Earnings available for fixed charges $ 165.5 $ 170.5 $ 176.0 $ 181.7 $ 308.2 $ 118.4 $ 257.0 Ratio of earnings to fixed charges 1.44x 1.83x 1.80x 2.44x 1.72x 1.83x 1.73x For purposes of determining the ratio of earnings to fixed charges, and the deficiency, if any, earnings are defined as net profit from continuing operations before related income tax expenses, extraordinary items, minority interests, and income or losses from equity accounted associates, plus distributed income from equity accounted associates and fixed charges. Fixed charges consist of borrowing costs expensed and capitalized, amortized premiums, discounts and capitalized expenses related to indebtedness and a portion of lease rental expenses, which is the portion deemed to be representative of the interest factor. COMPUTATION OF RATIO OF EARNINGS TO FIXED CHARGES CALCULATED USING U.S. GAAP FINANCIAL DATA Fiscal Year Ended Six Months Ended June 30, December 31, -------------------- 2001 2002 2003 2002 2003 ------- ------- ------- ------- ------- (A$ million, except for ratios) Net profit (loss) from continuing operations before extraordinary items, income taxes and minority interests $ 66.8 $ 16.3 $ 203.7 $ 66.1 $ 153.5 Share of net profit of associates (12.9) (7.9) (6.9) (2.6) (3.3) Dividends received from associates 8.6 15.3 12.7 4.5 4.2 ------- ------- ------- ------- ------- $ 62.5 $ 23.7 $ 209.5 $ 68.0 $ 154.4 ------- ------- ------- ------- ------- Fixed charges: Borrowing costs $ 107.5 $ 76.6 $ 181.9 $ 70.5 $ 141.6 Estimated interest in rental Payments 2.2 1.7 4.0 1.0 3.5 ------- ------- ------- ------- ------- Total fixed charges $ 109.7 $ 78.3 $ 185.9 ------- ------- ------- $ 71.5 $ 145.1 ------- ------- Earnings available for fixed charges $ 172.2 $ 102.0 $ 395.4 $ 139.5 $ 299.5 Ratio of earnings to fixed charges 1.57x 1.30x 2.13x 1.95x 2.06x For purposes of determining the ratio of earnings to fixed charges, and the deficiency, if any, earnings are defined as net profit from continuing operations before related income tax expenses, extraordinary items, minority interests, and income or losses from equity accounted associates, plus distributed income from equity accounted associates and fixed charges. Fixed charges consist of borrowing costs expensed and capitalized, amortized premiums, discounts and capitalized expenses related to indebtedness, changes in the fair value of derivative financial instruments and a portion of lease rental expenses, which is the portion deemed to be representative of the interest factor.