This math topic focuses on calculating equivalent ratios, particularly in the context of scaling down recipes or mixing quantities. The problems involve determining the necessary amount of one ingredient when given a specific amount of another, maintaining the original ratio. Each question presents a scenario involving ratios with decimal quantities, such as milliliters of ingredients in recipes or paint mixtures, requiring ratio calculation and decimal manipulation skills to solve.
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This paint color needs 1 ml of blue for every 4.5 ml of magenta. How much blue is needed if you have 2.25 ml of magenta