Our small city has two buses.  Each bus can have a capacity of 1/6 as much as the train, which has a capacity of 120 people.  What is the combined capacity of the two buses?
Every bus has a capacity of: 120 * 1/6 = <<120*1/6=20>>20 people.
Combined, both the buses have a capacity of 20 * 2= <<20*2=40>>40 people.
#### 40