Answer: The ratio of blue cars to cars that are not blue in simplest form = 7:18
Explanation:
Given: There are 21 blue cars and 75 cars total.
Then, number of cars that are not blue = 75 -21 = 54
Now, the ratio of blue cars to cars that are not blue =
[Divide numerator and denominator by 3.]
Hence, the ratio of blue cars to cars that are not blue in simplest form = 7:18