Answer:
Paint A
Explanation:
The first thing to note is that the question is worded strangely. It is asking for a blue to yellow ratio, but the ratio given in each option is yellow to blue. In this case, we would want to flip the ratio to make it blue to yellow and more consistent.
The fastest (and easiest way in my opinion) is to convert each ratio into a fraction where the numerator would be the blue paint and the denominator would be the yellow paint, which would denote blue paint per yellow paint.
Using this method, we would get this:
Paint A:
Paint B:
Paint C:
Paint D:
Then, we can convert to a whole number with a decimal, which we can (mostly) estimate in our heads.
Paint A: 1.8
Paint B: 1.5
Paint C: ~1.18
Paint D: 1.25
As we can see, the highest whole number belongs to Paint A, in which you would get 1.8 parts of blue paint compared to 1 part of yellow paint.
If I misinterpreted the information presented in the poor copy-paste formatting of the question and the ratio should be reversed, please note that the correct answer is Paint C, where it would have 1 part of yellow compared to 1.18 parts of blue.