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Net Income per Common Share | 6 Months Ended
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Jul. 31, 2015
Net Income per Common Share | 9. Net Income per Common Share The following is a reconciliation of the weighted-average common shares outstanding used for the computation of basic and diluted net income per common share:
|  | Three Months Ended July 31, |  |  | Six Months Ended July 31, |
|  | 2015 |  |  | 2014 |  |  | 2015 |  |  | 2014 |
Basic weighted-average common shares outstanding |  |  | 127,910,026 |  |  |  | 136,453,663 |  |  |  | 129,529,108 |  |  |  | 140,201,489 |
Effect of dilutive options, stock appreciation rights, performance stock units and restricted stock units |  |  | 1,170,568 |  |  |  | 1,723,447 |  |  |  | 1,401,985 |  |  |  | 1,777,162 |
Diluted weighted-average shares outstanding |  |  | 129,080,594 |  |  |  | 138,177,110 |  |  |  | 130,931,093 |  |  |  | 141,978,651 |
For the three months ended July 31, 2015 and 2014, awards to purchase 559,875 common shares with an exercise price range of $36.07 to $46.02 and 1,183,390 common shares with an exercise price range of $35.12 to $46.02 were excluded from the Company’s computation of diluted weighted-average shares outstanding because their effect would have been anti-dilutive. For the six months ended July 31, 2015 and 2014, awards to purchase 329,938 common shares with an exercise price range of $36.07 to $46.02 and 1,065,670 common shares with an exercise price range of $35.12 to $46.02 were excluded from the Company’s computation of diluted weighted-average shares outstanding because their effect would have been anti-dilutive. Excluded from the calculation of diluted net income per common share as of July 31, 2015 and 2014 were 2,047,250 and 1,744,034 performance-based equity awards, respectively, since they did not meet the required performance criteria.

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