Exhibit No. 11(a) Computation for Primary Earnings Per Share For the Three Months Ended March 31, 1996 and 1995 (amounts in millions except for per-share data) Unaudited Three Months Ended March 31 ------------------ 1996 1995 ----- ----- Common Stock and Common Stock Equivalents - ----------------------------------------- Average number of common shares outstanding including shares issuable under stock options 37.5 37.5 ===== ===== Earnings Per Share from Continuing - ---------------------------------- Businesses ---------- Earnings from continuing businesses $36.3 $26.5 Less: Dividend requirement on Series A convertible preferred stock 4.4 4.7 Plus: Tax benefit on dividends paid on unallocated preferred shares 1.0 1.1 ------ ------ Earnings from continuing businesses $32.9 $22.9 ====== ====== Earnings from continuing businesses per share of common stock $ .88 $ .61 ====== ====== Net Earnings Per Share - ---------------------- Net earnings $36.3 $34.4 Less: Dividend requirement on Series A convertible preferred stock 4.4 4.7 Plus: Tax benefit on dividends applicable to unallocated preferred shares 1.0 1.1 ------ ------ Net earnings applicable to common stock $32.9 $30.8 ====== ====== Net earnings per share of common stock $ .88 $ .82 ====== ====== 25