a) Determine the current book value of the pump machine - using the straight line method - based on its following data: Its price (five years ago) is LE 500,000 Its salvage value (three years from now) is LE 50,000 b) Use Declining-Balance Depreciation method to estimate the depreciation rate (d) and the book value after 10 years (BV) for a system that was purchased two years ago, its price was LE500,000 and its current salvage value is LE300,000