Posted by **Sowmiya** on Thursday, November 12, 2009 at 2:21pm.

Truck transportation has an energy cost of 0.76 kcal kg-1 km-1, and it is about 3700 km from San Francisco to Toronto.

If a romaine lettuce grown near SF has a specific energy content of 17.0 kcal (100g)-1 and the diesel-powered truck has a payload of 20,000 lbs, calculate the ratio of the amount of energy spent in transportation to the amount of energy delivered in the product.

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