Elyas helps his parents install fence posts in their backyard. They install a row of \(7\) equally-spaced posts. The posts are all the same size. The distance between the middle of the 2nd post and the middle of the 5th post is four and a half meters.
What is the distance between the middle of the first post and the middle of the last post?
Hint: You might start by drawing a diagram of the fence posts and labelling it with the distance you know.
Themes: Geometry & Measurement, Number Sense