A piece of machinery that cost OMR 80,000, has a trade-in value of OMR 5,000 and an estimated life of 25 years. Required: 1. Using the double declining balance method of depreciation, prepare a depreciation schedule for the first 5 years. 2. An asset's value is decreased over time as a result of depreciation. The depreciation methods include straight line, declining balance, sum-of-the-years' digits, and units of production. What makes the straight-line method better?