The double-declining -balance method is to be used for an asset with a cost of $42000, salvage value of $6000 and an estimated useful life of six years. (a) Find the value of the multiplier () and calculate the amount of depreciation for the second full year of use of the asset. (b) What is the book value of the asset at the end of the fourth year? (c) What will be the depreciation and book value amounts in the fifth period if Straight Line method is in use