Marcus built a model car that is 4 inches wide. What scale was used to build the car if the actual width of the car is 6 feet?
A. 1 in. = 2 ft
B. 1 in. = 2.5 ft
C. 1 in. = 1.5 ft
D. 1 ft = 1.5 in.
To determine the scale, we need to find the ratio between the model car's width and the actual car's width.
First, we need to convert the actual width of the car from feet to inches:
6 feet = 6 x 12 inches = 72 inches
Now we can set up a proportion:
model car width / actual car width = 1 / scale
Plugging in the values we know:
4 inches / 72 inches = 1 / scale
Solving for scale:
scale = 72 / 4 = 18
Therefore, the scale used to build the car is 1 inch = 18 inches or written in feet, 1 ft = 1.5 inches.
Answer: D. 1 ft = 1.5 in.