EXHIBIT 11.1 XTRA CORPORATION EARNINGS PER SHARE AND WEIGHTED AVERAGE SHARES OUTSTANDING ---------------------------------------------------------- CALCULATION ------------ FOR THE THREE MONTHS ENDED DECEMBER 31, 1996 AND 1995 (MILLIONS OF DOLLARS EXCEPT PER SHARE AMOUNTS) (UNAUDITED) Three Months Ended December 31, ----------------------- 1996 1995 --------- --------- Net Income $ 13.1 $ 13.9 ======= ======= Weighted average number of fully diluted common shares outstanding (in thousands) 15,318 16,431 Earnings per fully diluted common share $ 0.85 $ 0.85 ======= ======= Computation of Primary Shares Outstanding (in thousands) - ------------------------------- Weighted average common shares 15,299 16,396 outstanding Common stock equivalents for primary EPS: 17 35 ------- ------- Weighted average number of common shares outstanding (primary) 15,316 16,431 ======= ======= Computation of Fully Diluted Shares Outstanding (in thousands) - ----------------------------------- Weighted average common shares outstanding 15,299 16,396 Common stock equivalents for fully diluted EPS: 19 35 ------- ------- Weighted average number of common shares outstanding (fully diluted) 15,318 16,431 ======= =======