annual Income tax rates on taxable income 137 per first o 20% on 4000 Non-taxable callowances month national insurance for personal allowance annum for #3000 per annum 25 % on remainder per his wife - 1400 per annum his children. for Paul bought and sold a computer. He wrote his business activity as follows: Cost price of computer = $1064 Marked price of computer $1399 Discount on marked price = 5% (if paid by cash) Calculate o the selling price (paid cash) (11) the profit or loss as a percentage of the cost price. Thomas invested S1498 at 6% simple interest per annum. Calculate: (i) The interest, in dollars, earned after six months 4. (iii) How long it will be before his investment earns $449.40 The TOTAL amount of money in his account after 3 years