Machinery purchased for $66,000 by Metlock Co. in 2016 was originally estimated to have a life of 8 years with a salvage value of $4,400 at the end of that time. Depreciation has been entered for 5 years on this basis. In 2021, it is determined that the total estimated life should be 10 years with a salvage value of $4,950 at the end of that time. Assume straight-line depreciation. Prepare the entry to record depreciation for 2021.

Free of jargon and technical language

The answer is  passage 1.

The advantage of administering personality tests on employees is that it will allow the employer to know the mindset and personality of the employee. this will allow the employer to at least have an idea as to how the employee works and how his attitude in the workplace. the disadvantage is that it may make the employee a little anxious as to whether he would meet the personality requirements of the employer and whether he would be able to retain the job or not. 

The answer is one year.