EXHIBIT 11 OGDEN CORPORATION AND SUBSIDIARIES DETAIL OF COMPUTATION OF EARNINGS APPLICABLE TO COMMON STOCK FOR THE NINE MONTHS FOR THE THREE MONTHS ENDED SEPTEMBER 30, ENDED SEPTEMBER 30, 1994 1993 1994 1993 (In Thousands) NUMBER OF SHARES USED FOR COMPUTATION OF EARNINGS PER SHARE: Average number of common shares 43,565 43,343 43,593 43,460 NUMBER OF SHARES USED FOR COMPUTATION OF EARNINGS PER SHARE ASSUMING FULL DILUTION: Average number of common shares 43,565 43,343 43,593 43,460 Shares issuable for conversion of preferred stock 331 360 325 350 Shares issuable for conversion of debentures 56 Number of shares used for computation 43,896 43,759 43,918 43,810 COMPUTATION OF EARNINGS APPLICABLE TO COMMON SHARES: Income before cumulative effect of changes in accounting principles $51,710 $44,637 $18,742 $14,723 Add (less): adjustments arising from minority interests in consolidated subsidiaries 7 24 5 11 dividends on Ogden preferred stock (139) (151) (45) (49) Consolidated income applicable to Ogden common stock $51,578 $44,510 $18,702 $14,685 Cumulative effect of changes in accounting principles $(1,520) $(5,340) $ 0 $ 0 COMPUTATION OF EARNINGS APPLICABLE TO COMMON SHARES- ASSUMING FULL DILUTION: Income before cumulative effect of changes in accounting principles $51,710 $44,637 $18,742 $14,723 Add: adjustments arising from minority interests in consolidated subsidiaries 7 24 5 11 debenture interest-net of applicable income taxes 16 (1) Consolidated income applicable to Ogden common stock $51,717 $44,677 $18,747 $14,733 Cumulative effect of changes in accounting principles $(1,520) $(5,340) $ 0 $ 0 Note: Earnings per common share were computed by dividing net income, increased (decreased) for adjustments arising from minority interest in consolidated subsidiaries, reduced by preferred stock dividend requirements, by the weighted average of the number of shares of common stock and common stock equivalents, where dilutive, outstanding during each period. Earnings per common share, assuming full dilution, were computed on the assumption that all convertible debentures, convertible preferred stock, and stock options converted or exercised during each period, or outstanding at the end of each period were converted at the beginning of each period or at the date of issuance or grant, if dilutive. This computation provides for the elimination of related convertible debenture interest and preferred dividends.