F7 Exam December 2011 – Question 2 – deferred tax

In question mentioned above, why 8,000,000 gain on revaluation of leased plant on the first day of the year ended 30 Sep 2011 (i.e 1-Oct-2010) creates 8,000,000 x 30% = 2,400,000 deferred tax? Why the deferred tax for this gain is not (8,000,000 – 500,000 additional depreciation for the year) x 30% = 2,245,000?
(500,000 = 8,000,000/16 years)

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