Answer:
There's one inch of space between the bookshelf and the windows.
Explanation:
To know the relation ship between the width of the bookshelf and the distance between the windows, we need to know how many inches are in "six and one half feet", which is 6.5 feet.
We know that 1 feet equals 12 inches. Now, we can convert:
![6.5ft(12in)/(1ft)=78in](https://img.qammunity.org/2020/formulas/mathematics/middle-school/ozz4emitu9r51dbfb3fsnc011x0myp5tsf.png)
This means that the width of the bookshelf is 77 inches and the space between the two windows is 78 inches. Therefore, there's one inch of space between the bookshelf and the windows, that's the relationship.