Cost Price (N) = 60000 Salvage value (N) = 18000 Annual depreciation (N) = 4200 Useful life (Years) = 10 The formula to calculate the total depreciation is: Total depreciation = (Cost Price - Salvage value) / Useful life Now, let's plug in the values: Total depreciation = (60000 - 18000) / 10 Total depreciation = 42000 / 10 Total depreciation = 4200 Therefore, the total depreciation represented by Z in the table is N 42,000.