Final answer:
The ratio of the length of a tile in the model to the length of an actual tile is 1/18.
Step-by-step explanation:
To find the ratio of the length of a tile in the model to the length of an actual tile, we can compare the scale distance to the actual distance. In the model, each tile has a length of 1/2 inch, while in real life, the tiles have a length of 1/3 feet.
We can set up a proportion to find the ratio: (1/2 inch) / (1/3 feet) = x / 1 feet. To solve for x, we cross multiply and divide: x = (1/2) * (1/3) = 1/6 feet.
Therefore, the ratio of the length of a tile in the model to the length of an actual tile is 1/6 feet, which is equivalent to the simplified fraction 1/18. Option 1: 1/18 is the correct answer.