All Lined Up

Yesterday’s Problem:

A pad of writing paper and a pencil cost a total of $1.10. The paper cost $1.00 more than the pencil. What was the price of each?

Answer:

The paper was $1.05 and the pencil was $.05 – added together equals $1.10, and $1.05-$0.05 equals $1.00.

Today’s Problem:

Five cars are lined up bumper to bumper while traveling on Interstate 5. How many bumpers are touching each other?