नीचे दिए गए आयात-निर्यात के आंकड़ों के आधार पर, 1978-79 से 1979-80 तक आयात-निर्यात व्यापार अंतर (trade gap) में लगभग कितने प्रतिशत की वृद्धि हुई? वर्षआयात (करोड़ में)निर्यात (करोड़ में)1978-79700058001979-80920064001980-811240066001981-821340078001982-83140008700

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?