1 – 5 90,000 per annum (so discount using the 5 year annuity factor at 10%) 5 scrap of 20000 (so discount using the ordinary 5 year discount factor at 10%)
1(b) The average profit is 120000 – 30000 = 90000 – 56000 (depreciation – (300000 – 20000)/5) = 34000 The average investment is (300000 + 20000) / 2 = 160000