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Earnings per equity share (Tables)
 12 Months Ended
Mar. 31, 2015
Weighted-average number of shares
     As of March 31,  
     2013      2014      2015  

Weighted average number of equity shares used in computing basic earnings per equity share

      2,360,974,835         2,390,295,703         2,423,777,245   

Effect of potential equity shares for stock options outstanding

      25,132,636         17,849,608         23,563,558   
  

 

 

     

 

 

     

 

 

  

Weighted average number of equity shares used in computing diluted earnings per equity share

      2,386,107,471         2,408,145,311         2,447,340,803   
  

 

 

     

 

 

     

 

 

  
Reconciliation of Earnings Per Share

The following are reconciliations of basic and diluted earnings per equity share and earnings per ADS.

 

     Fiscal years ended March 31,  
     2013      2014      2015      2015  

Basic earnings per share

    Rs. 26.18       Rs. 33.18       Rs. 40.94       US$ 0.66   

Effect of potential equity shares for stock options outstanding

      0.27         0.24         0.39         0.01   
  

 

 

     

 

 

     

 

 

     

 

 

  

Diluted earnings per share

    Rs. 25.91       Rs. 32.94       Rs. 40.55       US$ 0.65   
  

 

 

     

 

 

     

 

 

     

 

 

  

Basic earnings per ADS

    Rs. 78.54       Rs. 99.54       Rs. 122.82       US$ 1.98   

Effect of potential equity shares for stock options outstanding

      0.81         0.72         1.17         0.03   
  

 

 

     

 

 

     

 

 

     

 

 

  

Diluted earnings per ADS

    Rs. 77.73       Rs. 98.82       Rs. 121.65       US$ 1.95