Jackal Energy purchased a transport truck on January 1, 2017, for $293,700 cash. Its estimated useful life five years or 310,000 kilometres with an estimated residual value of $51,900. Required: Calculate depreciation expense for the year ended December 31, 2017, using each of the following methods: Straight-line b Double-declining-balance c. Units-of-production (assume 40,000 kilometres were actually driven in 2017). Depreciation Expense Method Straight-line Double-declining-balance Units-of-production a b C Analysis component: Which depreciation method will produce the highest profit for Jackal in 2017? Highest profit in 2017