🚀 go-pugleaf

In article <C0HD3p.1u4@dcs.ed.ac.uk>, tk@dcs.ed.ac.uk (Tommy Kelly) writes:
>Every morning, I take a train to the city, then have to take a bus to
>Uni.  There are two bus stops within easy walking distance of the train
>station.
>
>Bus stop 1 is 4mins 20 seconds away, and is the earlier on the route (the bus
>visits it before bus stop 2).
>
>Bus stop 2 is 3mins 20 seconds away.
>
>The bus takes about 30 seconds to travel from stop 1 to stop 2.
>
>Bus interarrival time is 15 minutes, and can effectively be at any point
>in their run when I begin my walk from the train station.
>
>a. On average, which bus stop should I walk to minimize my time in travelling
>   to the University?

stop 2.  It takes 1 more minute to get to stop 1 than stop 2.  So, if
you can catch the bus at stop-1, you sure can catch it at stop-2; it is
not true the other way.  Also, if you are 30 seconds away from stop-2
and see the bus coming, you can run like crazy with waving arms as
Dagwood does.  (Actually he is in carpool now.)