2: 1 thermos bottle costs 58÷4= 14.5 yuan; A tea set 14.5×2=29 yuan (analysis: from "the price of three tea sets is equivalent to the price of six thermos bottles", we can know that "1 tea set is equivalent to the price of two thermos bottles", so it is 58÷4= 14.5).
3: per kilogram of rice: (16.72-10× 0.32) ÷16 = 0.845; 0.845+0.32= 1. 165 yuan per kilogram of flour. (Analysis: From the two ways of purchasing, we know that flour is 0.32 yuan more expensive than rice per catty, so 10× 0.32 yuan is more expensive than 10×0.32 Jin, so 16.72- 10×0.32 means/kloc-.
The country is rich and strong, and the people are duty-bound. We should all open our eyes and guide the people to the light.
It makes