Answer:
     Ellajane Corporation - Journal Entries
Date    Particulars            Debit     Credit
1-Mar    Treasury Stock        $35,000
           To Cash                    $35,000
        (Being 2500 shares of treasury stock purchased at $14 per share)
10-Apr    Cash A/c (1250*$18)   $22,500
            To Treasury Stock (1250*14)    $17,500
            To Additional Paid in Capital   $5,000
         (Being 1250 shares of treasury stock sold at $18 per share)
12-Jun    Cash A/c (1250*12)            $15,000
         Additional Paid in Capital A/c  $2,500
             To Treasury Stock (1250*14)         $17,500
          (Being 1250 shares of treasury stock sold at $12 per share)