The original cost for a distillation tower is $50,000, and the useful life of the tower is estimated to be 10 years. How much must be placed annually in an annuity at an interest rate of 6 percent to obtain sufficient funds to replace the tower at the end of 10 years? If the scrap value of the distillation tower is $5000, determine the asset value (i.e. the total book value of the tower) at the end of 5 years based on straight line depreciation.