1. The problem statement, all variables and given/known data I'm really having a hard time with this question, i posted the same question on another forum, but didn't really understand what the teacher was trying to say, please explain for me. thank you :) a) Calculate the time per mode of transport of the lettuce from each starting point. b) calculate the total time required for each complete journey of the lettuce from its origin to Barrie c) d) e) 2. Relevant equations time = distance / speed or t = d/v 3. The attempt at a solution a) and b) - for a) to calculate time per mode of transport, i divided the partial distances by the average speed - for b) to calculate the total time i added the time per mode of transport please tell me if this is correct. c) i dont understand what to do here. Do they want me to determine the carbon dioxide emissions for each route, as in the truck, train and plane portions, or the average carbon dioxide emissions. And how would i do that? d) *** Route 1. Fuel consumed = (31 km) x (30 L / 100 km) = 9.3 L Route 2. Fuel consumed = (63 km) x (1.2 L / 100 km) = 0.76 L Route 3. Fuel consumed = (81 km) x (30 L / 100 km) = 24 L Route 4. Fuel consumed = (2279 km) x (3.5 L / 100 km) = 80 L Route 5. Fuel consumed = (81 km) x (30 L / 100 km) = 24 L e) *** please tell me if im right here. Considering that each shipment of lettuce is priced at the same value, I would chose to purchase the lettuce that travels the least distance (which would be the first route of lettuce). Since the lettuce travels less distance, the lettuce would be fresher, and of higher quality. It consumes a small amount of fuel (only 9.3 L) and does not produce a great amount of carbon dioxide emissions. Even though Route 2 consumes less fuel (0.76 L), it still has a longer distance to travel, meanin the lettuce will not be as fresh.