Fill in the Blanks :
(i) In statement of profit or loss, profit on sale of assets are _________ to closing capital.
(ii) Bad debts are ___________ from closing capital in statement of profit or loss.
(iii) __________ unscientific system of Bookkeeping.
(iv) Under the Single Entry System, profit or loss is calculated by deducting the opening capital balance from __________ at the end of the year.