EXHIBIT 11 CALCULATION OF PRIMARY EARNINGS PER SHARE Year Ended April 30, ------------------------------------------------------- 1994 1993 1992 ------------ ------------ ------------ Net earnings $200,528,000 $180,705,000 $162,253,000 ============ ============ ============ Average number of shares outstanding - primary: Average number of common shares outstanding 105,882,000 106,579,000 107,495,000 Dilutive effect of stock options after application of treasury stock method 887,000 1,065,000 1,659,000 ----------- ----------- ----------- Average number of shares outstanding 106,769,000 107,644,000 109,154,000 =========== =========== =========== Earnings per share: Primary $1.88 $1.68 $1.49 ===== ===== ===== EXHIBIT 11 CALCULATION OF FULLY DILUTED EARNINGS PER SHARE Year Ended April 30, ------------------------------------------------------- 1994 1993 1992 ------------ ------------ ------------ Net earnings $200,528,000 $180,705,000 $162,253,000 ============ ============ ============ Average number of shares outstanding - fully diluted: Shares used in calculating primary earnings per share 106,769,000 107,644,000 109,154,000 Additional effect of stock options after application of treasury stock method 203,000 - - ----------- ----------- ----------- Average number of shares outstanding 106,972,000 107,644,000 109,154,000 =========== =========== =========== Earnings per share: Fully diluted $1.87 $1.68 $1.49 ===== ===== =====