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Percentages SAT question
Math · Problem-Solving and Data Analysis · Hard · Answer it here, explanation included.
According to a set of standards, a certain type of substance can contain a maximum of phosphorus by mass. If a sample of this substance has a mass of grams, what is the maximum mass, in grams, of phosphorus the sample can contain to meet these standards?
Enter a number or fraction (like 3/17 or 0.176). Press Enter to check.
ExplanationShow
The correct answer is . It's given that a certain type of substance can contain a maximum of phosphorus by mass to meet a set of standards. If a sample of the substance has a mass of grams, it follows that the maximum mass, in grams, of phosphorus the sample can contain to meet the standards is of , or , which is equivalent to , or . Note that .0014 and 0.001 are examples of ways to enter a correct answer.
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