Three boards are placed end to end to make a walkway. The first board is 3 feet 11 inches long, the second board is 4 feet 7 inches long, and the third board is 2 feet 8 inches long. How long is the walkway?

To find the total length of the walkway, we need to add the lengths of all three boards together.

First board: 3 feet 11 inches = 3.92 feet
Second board: 4 feet 7 inches = 4.58 feet
Third board: 2 feet 8 inches = 2.67 feet

Total length = 3.92 feet + 4.58 feet + 2.67 feet = 11.17 feet

Therefore, the walkway is 11 feet and 2 inches long.