The state capitol building in Baton Rouge, Louisiana, is 450 feet tall. Ella's scale model of the building uses the scale 25 feet = 10 inches. How tall is Ella's model?

For this case what we can do to represent this problem is the following rule of three:

25 feet - - - > 10 inches

450 feet - - - > x

Clearing the value of x we have:

x = (450/25) * (10)

x = 180 inches.

Now, let's convert this value to feet:

x = 180 * (1/12) = 15 feet

Answer:

Ella's model is 15 feet tall