EXHIBIT 11 AIR & WATER TECHNOLOGIES CORPORATION COMPUTATION OF PER SHARE EARNINGS (in thousands except per share amounts) Three Months Ended Six Months Ended April 30, April 30, 1994 1993 1994 1993 -------- -------- -------- -------- Primary Earnings (Loss) Per Share: 1. Income (loss) from continuing operations $(18,747) $ 1,507 $(52,915) $ 1,786 2. Income (loss) from discontinued operations (35,000) 1,468 (38,229) 1,568 -------- -------- -------- -------- 3. Net income (loss) $(53,747) $ 2,975 $(91,144) $ 3,354 -------- -------- -------- -------- 4. Weighted average shares outstanding 25,065 24,812 24,940 24,814 -------- -------- -------- -------- 5. Earnings (loss) per share from continuing operations (1/4) $ (.74) $ .06 $ (2.12) $ .07 6. Earnings (loss) per share from discontinued operations (2/4) (1.40) .06 (1.53) .07 -------- -------- -------- -------- 7. Net income (loss) per share (3/4) $ (2.14) $ .12 $ (3.65) $ .14 ======== ======== ======== ======== Fully Diluted Earnings (Loss) Per Share: 8. Line 1. above $(18,747) $ 1,507 $(52,915) $ 1,786 9. Add back interest, net of tax on assumed conversion of the Company's 8% Convertible Debentures 2,300 2,300 4,600 4,600 -------- -------- -------- -------- 10. Adjusted income (loss) from continuing operations (16,447) 3,807 (48,315) 6,386 11. Income (loss) from discontinued operations (35,000) 1,468 (38,229) 1,568 -------- -------- -------- -------- 12. Adjusted net income (loss) $(51,447) $ 5,275 $(86,544) $ 7,954 -------- -------- -------- -------- 13. Weighted average shares outstanding (Line 4) 25,065 24,812 24,940 24,814 14. Add additional shares issuable upon assumed conversion of the Company's 8% Convertible Debentures 3,833 3,833 3,833 3,833 -------- -------- -------- -------- 15. Adjusted weighted average shares outstanding 28,898 28,645 28,773 28,647 -------- -------- -------- -------- 16. Earnings (loss) per share from continuing operations (10/15) $ (.57) $ .13 $ (1.68) $ .22 17. Earnings (loss) per share from discontinued operations (11/15) (1.21) .05 (1.33) .05 -------- -------- -------- -------- 18. Net income (loss) per share (12/15)* $ (1.78) $ .18 $ (3.01) $ .27 ======== ======== ======== ======== * Fully diluted earnings (loss) per share are not presented as the assumed conversion of the Company's 8% Convertible Debentures is anti-dilutive.