Answer:
Step-by-step explanation:
Remark
This is a proportion question. A proportion is 2 equal ratios that requires you to solve the 4th part when you know the other 3.
Givens
1 foot scale model length
5 feet of actual length
x = length of model
65 feet of actual length
Formula
1 foot / 5 feet = x / 65 feet
Solution
1/5 = x / 65 Cross multiply
5x = 65 Divide by 5
5x/5 = 65/5
x = 13
Answer
The model is 13 feet long
