A model car was built on a scale of 1:30. If the height of the model car was 1 inches what was the height of the actual car in feet?
See the entire solution process below:
We can write this problem as:
Therefore x in = 30 in.
Because 1 ft = 12 in we can write 30 inches as:
The actual height of the car was 2.5 feet.
Scale is ratio.
Write in fraction format:
Actually, in this case, I prefer it up the other way:
But we are told that the model car is 1 inch high so we write:
So the actual car had the height of 30 inches.
(Oh come on! That is silly! I have never seen a car 30" high!)
The question instructs that the height is to be in feet.
1 foot is the same length as 12 inches. So we need to see how many lots of 12 inches we can fit into 30 inches
Actual height in feet is