[3 marks] A bond with face value $10,000 pays il?) = 9%. An investor buys it for $10,500 and sells it 4 years later for $10,200. Calculate the yield rate, il) earned by the investor over this period using the method of averages. [3 marks] A bond with face value $10,000 pays il?) = 9%. An investor buys it for $10,500 and sells it 4 years later for $10,200. Calculate the yield rate, il) earned by the investor over this period using the method of averages