The following table shows the marks obtained by six students in four subjects in an examination. (The maximum marks for each subject are 100.) Student/SubjectEnglishHindiMathematicsScienceA8480100100B86859290C757910099D88839993E77749575F728810072 In which subject did the students show the highest overall average performance?

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?