A machine costs 16,000 and has a 5-year life. The required rate of return is 10%. By how much can taxable profit be reduced through the writing down allowance (WDA) in the third year, if the annual WDA is 30% on a declining balance? (Round your answer to the nearest pound.) If the tax rate is 40%, what is the present value of the WDA in year 4 to the machine's owners? (Round your answer to two decimal places.) If the machine has a scrap value of 1,600 after 5 years, what will be the fifth year's adjustment to the WDA? (Round your answer to the nearest pound.)