Final answer:
A typical container ship traveling between Shanghai and Los Angeles can haul a maximum of 100,000 tons of freight per year, although the actual amount may vary.
Step-by-step explanation:
The approximate number of tons of freight hauled per year can be determined based on the information provided. A typical container ship traveling between Shanghai and Los Angeles carries 10,000 20-foot equivalent containers, each bearing an average of 10 tons of cargo. Therefore, the full load capacity of the ship is 100,000 tons. However, it is important to note that this is a maximum load capacity and the actual amount of freight hauled per year may vary.