This condition does not exist in all partnerships. The members of the partnership may invest unequal amounts and share in the profits on the basis of their investment. The investment may be equal, but one partner may receive an extra share of the profits in return for work performed in lieu of a salary. The investment may be unequal, but the one with the smaller investment may share equally in the profits in return for work performed. It is not unusual for a silent partner to furnish all of the capital and share equally in the profits with an ostensible partner who assumes full responsibility for the management of the business. =33. Interest on Investment.= When the investment of the partners is unequal, it is customary to allow interest on the capital invested and to charge interest on all withdrawals. The interest on capital must be credited, and the interest on withdrawals must be charged, before profits can be distributed. =34. Capital and Personal Accounts.= In a partnership a special account should be opened in the name of each partner to represent his investment (for example, John Smith, Capital). To this account is credited his net investment. When the books are closed, the account is credited with his share of the profits, and debited with his withdrawals. A personal account should be opened in the name of each partner, to which is debited all withdrawals, either of money or goods. Even when the capital invested is equal, some partnership agreements provide that interest shall be charged on all withdrawals, particularly when the business is of such a nature that goods traded in are likely to be withdrawn by the partners, or when, for any reason, withdrawals are likely to be unequal. The balance of the partner's personal account is closed into his capital account when the books are closed. Before closing this account, it should be credited with interest on capital account and charged with the interest provided on withdrawals. =35. Opening the Books.= When the books of a partnership are opened, the essential features of the partnership agreement should be written at the top of the first page of the journal. Next following the partnership agreement, are the entries showing the nature and amount of the investment of each partner, the amounts being posted to the credit of partners' capital accounts. =36. Closing the Books.= When the books of a partnership are to be closed, the revenue accounts are closed into trading and profit and loss, the same as in any other form of business organization. The net profit is then apportioned according to agreement, the share of each partner being credited to his capital account. The balance of his personal account is then carried to his capital account; the balance of that account will then show his net investment.