Answer and Explanation:
The journal entries are as follows;
 On October 1 
Dividend Declared Dr $500 (2,000 shares × $0.25) 
 To Dividend payable $500 
(To record the cash dividend declaration)
Here the dividend declared is debited as it reduced the shareholder equity and credited the dividend payable as it increased the liability
 On October 15 
 No journal entry is required 
 On October 31 
 Dividend payable Dr $500
 To Cash $500
 (to record the cash dividend payment)
The dividend payable is debited as it decreased the liabilities and credited the cash as it also decreased the assets