In calculating GDP by the income approach, we should sum up: Multiple Choice wages, rent, interest and profit income. wages, consumption, investment and rent. wages, interest, investment, and exports. wages, profit income, investment, and consumption.The official unemployment rate: Multiple Choice is the percentage of the labour force which is working part-time. is the percentage of the total population which is not working. reveals people over 21 years of age who are currently discouraged and are not looking for a job. is the percentage of the labour force which is unemployed