Exhibit No. 11(b) COMPUTATION FOR DILUTED EARNINGS PER SHARE FOR THE YEARS ENDED DECEMBER 31 (AMOUNTS IN MILLIONS EXCEPT FOR PER-SHARE DATA) 1999 1998 1997 ---- ---- ---- Diluted Earnings (Loss) Per Share - --------------------------------- Net Earnings (loss) $14.3 $ (9.3) $185.0 ===== ====== ====== Average number of common shares outstanding 39.9 39.8 40.6 Average number of common shares issuable under stock options 0.3 0.6 0.4 --- --- --- Average number of common and common stock equivalents outstanding 40.2 40.4 41.0 ---- ---- ---- Diluted Earnings (Loss) per share $0.36 $(0.23) $ 4.50 ===== ====== ====== Diluted earnings (loss) per share for 1998 was antidilutive.