Question

A section of a boardwalk is made using 15 boards. Each board is 9 1/4 inches wide. The total width of the section is 144 inches. The spacing between each board is equal. What is the width of the spacing between each board? Write your answer in simplest form.

Answer 1

You would solve it by doing
9 1/4 (15)+x=144.
You would find the space the boards take up and then subtract that from the total width.