Define marginal revenue. The table below shows the percentage age distribution of the population of country X,in 2010 and 2017 as 120,000 and 150,000 respectively. YEAR 2010 2011 0-17 35 30 Calculate the population of the: dependants in year 2010; AGE GROUP (%) 60 18- 45 40 61 and above 20 30 14 mark​