Suppose you are trying to build a new city of 100 blocks. Each block is 1 mile square, has the same density, and can provide enough demand for a rapid transit station. We would like to arrange the blocks in the simplest possible way, and design a rapid transit system for them.

We will try out two different arrangements for the city: Grid City and Line City. Grid City is a 10 by 10 grid. Line City is a 100 by 1 line. How does the transit system work for both of them?