Answer:
560,000 shares
Explanation:
As for the information provided, we have
Opening outstanding shares = 300,000
Add: Jan 31 issued 10 % stock dividend = 300,000 10% = 30,000
Total balance on Jan 31 = 330,000 shares
Less: June 30 purchased shares = (100,000)
Balance on June 30 = 230,000 shares
Add: Aug 1 Re-Issued shares = 50,000
Balance on 1 Aug = 280,000
Add: Nov 30 Split off for each share 1 more share = 280,000
Balance on 31 December 2017 = 560,000 shares.