In Weber's least-cost location model, which statement best describes the role of input weights?

• A. Input weights never influence the optimal location.
• B. Heavier inputs are most likely to locate near input sources, while lighter finished goods may pull the site toward markets.
• C. Only finished goods weights determine the site.
• D. Weights determine location in a random, unpredictable way.

Answer: (B)

In Weber's least-cost location model, the plant location is chosen to minimize total transport costs, taking into account how much of each input is used and how much product is shipped to markets. The weights (quantities) of inputs matter because moving bulky, high-quantity inputs over distance is expensive, so the optimal site tends to be closer to the sources of those heavy inputs. At the same time, the weights of the finished products affect how costly it is to deliver to markets; when finished goods are relatively light, the transport cost to markets is smaller per unit distance, which can make proximity to input sources the dominant factor less restrictive and allow the market distance to influence the decision more. Put together, the idea is that heavier inputs pull the location toward their input sources, while lighter finished goods can pull the location toward markets. This captures the balancing act Weber’s model describes, where the relative weights of inputs and outputs shape the direction of the optimal site.