Answer: 3 feet
Explanation:
Length of house = 40 feet
Length of house on a blueprint = 5 feet
40 ÷ 5 = 8
As we can see, the scale for the blueprint is 1 feet (In Blueprint) = 8 feet.
So, width of house = 24 feet
Width of house on a blueprint = 24 ÷ 8 = 3 feet