There are a van and a bus transporting students on a student camping trip. Arriving at the site, there are 3 parking
spots. Let represent the van and represent the bus. The chart shows the different ways the vehicles can park.
a.
In what percent of the arrangements are the vehicles separated by
an empty parking space?

b.
In what percent of the arrangements are the vehicles parked next to
each other?

c.
In what percent of the arrangements does the left or right parking space remain vacant?