2. Two planes fly relatively from A and B at the same time. After two hours of meeting, the speed sum of the two planes is 1295 meters, and the distance between A and B is () meters. The quantitative relation I use is ().

3. It costs () yuan to buy 10 kg of rice per kg in 3.8 yuan, and the quantitative relationship I use is ().

A farm grows 8 hectares of wheat, with an average harvest of 6.5 tons per hectare. This farm can harvest () tons of wheat, and the quantitative relationship I use is ().

5. 12÷ 16 = ( )80 = 2.4:( )=( )%

6. The food company delivered a batch of eggs and duck eggs. The weight ratio of eggs to duck eggs is 10: 25.5, and the simplest ratio is (), in which eggs account for (-) times of the total number of two kinds of eggs, and the number of duck eggs is () times of eggs.

7. 40% of 15 tons is () tons, and15 tons is 25% more than () tons.

8. It is known that three times the number of A equals four times the number of B, and the ratio of A to B is (), and the ratio is ().