The given table shows the number of students enrolled in four colleges over four years (2017 to 2020). Study the table and answer the question below. Year/College | P | Q | R | S 2017 | 318 | 235 | 422 | 620 2018 | 523 | 418 | 313 | 514 2019 | 422 | 427 | 339 | 433 2020 | 325 | 418 | 611 | 328 Find the ratio of the total number of students enrolled in colleges Q and S in the year 2019 to the total number of students enrolled in colleges P and R in the year 2017.

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?