Room part of city road network as a square grid, the grid side length 500 meters roads are bidirectional, meals member company is located in the city center, room member must be home to sign in to the company every day to start new a day's work, each room motorcycle speed of about 20 km per hour, and at the same time the most two delivery, additional agreement, the customer won't merchants order of 10 km, and delivery orders arrived at merchants, do not need to line up at merchants, are completed only after 15 minutes equipment eat,
Part 1, a room, from the company to complete all delivery task need how many minutes?
2, the customer's expectations of its delivery equipment eat time plus waiting time for the merchant order from merchants distribution to its local transportation time, and the actual waiting time for the customer order to delivery of customer between the actual service time,
To meet the requirements of timeliness, ask how many meals, at least need to make each customer's actual waiting time does not exceed their expectations for 5 minutes?

CodePudding user response:

With, solving the model, is built