Answer:
The sidewalk is 34.5 inches wide.
Explanation:
Given:
A sidewalk is built 12 bricks wide by laying each brick side by side.
Brick measures 2 7/8 inches wide.
Now, to find the width of sidewalk.
Width of brick = 2 7/8 = 23/8.
Number of bricks = 12.
So, the sidewalk = width of brick × number of bricks
=
![(23)/(8) * 12](https://img.qammunity.org/2020/formulas/mathematics/middle-school/13tgfiqg3bmzhzyfllqqibiguclv0fbiqk.png)
=
![(276)/(8)](https://img.qammunity.org/2020/formulas/mathematics/middle-school/h2ae6l8x7x3k0w6s5h1oqxajmo14ywtnpu.png)
=
![34.5\ inches](https://img.qammunity.org/2020/formulas/mathematics/middle-school/ayfzw4teeottrjfis8mt54bufjmvndqew7.png)
Therefore, the sidewalk is 34.5 inches wide.