About queuing. . .

For example, how many entrances are there, how many people are there, and how many people can pass the inspection every minute.

How many people come every minute? . Ask how long it will take to complete the inspection. . That is, cows eat grass. .

take for example

There are 10 checkpoints at one entrance of China International Import Expo(CIIE), and one checkpoint can check 6 people every minute. At present, there are 600 people waiting in line, with an average of 30 people coming in every minute. In a few minutes, no one will line up. .

Now 30 people come in every minute, and 60 people pass by every minute. It means that among the 600 people waiting in line, they are disappearing at a rate of 30 people per minute.

therefore

600/( 10*6-30)=20min

You can modify the data yourself. .

Other requirements can be supplemented. .