Three doctors, Dr. Ben, Dr. Kane, and Dr. Wayne, visit a clinic from Monday to Saturday. Dr. Ben (10 mins, Rs. 100), Dr. Kane (15 mins, Rs. 200), and Dr. Wayne (25 mins, Rs. 300) see patients from 9:00 a.m. to 11:30 a.m. Mr. Singh visited the clinic on Monday, Wednesday, and Friday of a particular week, arriving at 8:50 a.m. on each of the three days. His token number was 13 on all three days. On which day was he at the clinic for the maximum duration?

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?