The amount of ounces of washer fluid that Jason should add 24 ounces of summer mixture to in order to produce winter mixture is 48 ounces. This problem is solved using the knowledge of ratios.
In the summer, the proportions are one part washer fluid to three parts water. That is, ratio : 1:3.
In the winter, the proportion of washing fluid to water is ratio: 2:1.
Because we're calculating for winter mixture and only have 24 ounces of summer mixture, hence,
2/1 = x/ 24
Making x the subject of the formula, we have
x = 2 * 24
x = 48
A ratio is a quantitative relationship between two values that shows how many times one value includes or is contained inside the other.
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