Case 1 - Depreciation Company buys new machines for 150.000 z, they will be depreciation during 5 years, calculate system of depreciation by: line 15% . digressive 10% Case 2 - Depreciation Company buys new machines for 100.000 z, they will be depreciation during 5 years, calculate system of depreciation by: Natural - normal usage it is 5000 h/y, but machines will by used in 1st y 7500 h, 2 nd y 9500, and other years 6500