I need help with this problem:

Suppose you design a second model car that is 1/4 the size of the model car you designed in Excercise 9.What is the perimeter of the license plate on the second model car?
Let me explain.The perimeter of the actual car's license plate was 36 inches.The first model's was 1.5 inches.The scale factor of the first model to the actual car was 1/24.The answer choices to this question are 1/4 inches,3/8 inches,3/4 inches,and 9 inches.Please tell me how to solve this question.

.4x=2x+1.2