9.5 Larry began trading in 1981, preparing accounts to 31 July each year. He ceases trading on 31 July 2009 and his adjusted trading profits in the closing years are as follows:

£

year to 31 July 2007 14,660 year to 31 July 2008 12,150 year to 31 July 2009 11,200 Adjusted trading profits for the year to 31 July 1997 were £15,900. Calculate Larry's trading income for 2009-10.