Final answer:
Aspen Shipping Co. aims to convert their current fleet to all-electric within 5 years. They currently have 100 electric trucks out of a total 200 trucks, meaning that they plan to have a total of 200 electric trucks in their all-electric fleet after 5 years. Hence, the correct answer is option (3).
Step-by-step explanation:
The question asks how many trucks Aspen Shipping Co. plans to have in their all-electric fleet after 5 years. Since the company already has half of their 200 trucks that are electric-powered, this means they currently have 100 electric trucks.
Given the company's goal is to switch to an all-electric fleet, the total number of trucks that Aspen Shipping Co. plans to have in their all-electric fleet after 5 years would be equivalent to their current total fleet size, assuming they are replacing their conventional vehicles with electric ones and not expanding the fleet size. Therefore, the correct answer is 200 trucks as their all-electric fleet after 5 years.