Step 1: Breakdown of costs in Municipal Solid Waste (MSW) management. In a typical centralized MSW management system, the major functional elements include: Collection and transport Biological treatment (e.g., composting) Thermal treatment (e.g., incineration) Disposal in a sanitary landfill Among these, collection and transport account for the highest cost due to the following reasons: Extensive labor and operational requirements. High fuel consumption for transport vehicles. Large-scale infrastructure required for collection.
Step 2: Compare costs of other components. Biological treatment: Less expensive than collection and transport, as it primarily involves local facilities.
Thermal treatment: Costly but less frequent in Tier I cities due to limited use of incineration plants.
Disposal in a sanitary landfill: Costly but less significant compared to collection and transport costs.
Length of the streets, in km, are shown on the network. The minimum distance travelled by the sweeping machine for completing the job of sweeping all the streets is ________ km. (rounded off to nearest integer)