Suppose for three countries A, B, and C, the population and GDP configurations change from 2010 to 2020 as follows: Country A: GDP increases from 100 to 600, population stays at 10. Country B: GDP increases from 200 to 400, population stays at 20. Country C: GDP increases from 300 to 300, population stays at 30. In terms of absolute increase in per capita GDP from 2010 to 2020, what is their ranking from highest to lowest?

In a data table, the production of rice for country Q and country R is 60 lakh tons and 54 lakh tons respectively. The production of wheat for country S and country T is 52 lakh tons and 52 lakh tons respectively. What is the ratio of the total production of rice of countries Q and R to the total production of wheat of countries S and T?

In a survey of 5 countries (P, Q, R, S, T), the rice production values are 40, 60, 54, 70, and 51 lakh tons respectively. What is the average production of rice (in lakh tons) across all 5 countries?