X runs a business as a sole trader that is ceasing operations following the disposal of its assets. His taxable income, which represents the firm's income, is K200.00, made up of K140000 plus balancing charge of K160000 caused by the disposal of depreciable assets resulting in the firm's shutdown. The tax payable on the taxable income of K200 000 is at the average rate applicable to a notional income of K160000. What is the tax payable?