Oman Liquefied Natural Gas LLC (Oman LNG) is a joint venture company established by a Royal Decree in 1994 and operates under the laws of the Sultanate of Oman. The company engages in the business of producing and selling Liquefied Natural Gas. The company appoints Ms.Aisha as the Assistant Accountant and on her first day to the office, the manager given her below furnished accounting errors of the company and asks her to analyze and rectify the errors.

1) sales of old furniture of the business for OMR 10,000 was treated as sales of goods.

2) rent of proprietor's residence OMR 12,000 was debited to rent account

3) cash received from Mr.Mohammed OMR 4,300 was credited to Mr.Ismail account

4) an amount of OMR 50,000 spent for the extension of Machinery has debited to wages account.

Ms.Aisha does not have previous experience in rectification of errors. As an accounting specialization student could you guide Ms.Aisha to analyze and show rectification entries for the above errors of the company.