2. I walked 480 kilometers in the afternoon. Process: I walked 965-85=880 meters in the afternoon, and the distance ratio between morning and afternoon was 5: 6, so I walked 880÷(5+6)*6=480 meters in the afternoon;
3. The length of the highway is 24 ÷ (45%-30%) =160 km;
4. Sell 1360 yuan. Process: If the dual-core sells X yuan, then: 5: 8 = 850: X, the solution is: X =1360;
5.3.5cm process: Let x cm, then: (1:7000000): (1:4000000) = 2: x, and the solution is x=3.5.