The Waccamaw Bridge is 80 yards long. The length of a model of the bridge is 20 inches long. What is the scale of the model?
To find the scale of the model, we need to convert the length of the bridge and the length of the model to the same unit of measurement.
Since 1 yard is equal to 36 inches, the length of the Waccamaw Bridge in inches is:
80 yards * 36 inches/yard = 2880 inches
Now we can calculate the scale of the model by dividing the length of the bridge by the length of the model:
Scale = Length of bridge / Length of model
Scale = 2880 inches / 20 inches
Scale = 144
Therefore, the scale of the model of the Waccamaw Bridge is 1:144.