According to a set of standards, a certain type of substance can contain a maximum of 0.001 % phosphorus by

Question

According to a set of standards, a certain type of substance can contain a maximum of 0.001 % phosphorus by mass. If a sample of this substance has a mass of 140 grams, what is the maximum mass, in grams, of phosphorus the sample can contain to meet these standards?

Accepted Answer

The correct answer is .0014 . It's given that a certain type of substance can contain a maximum of 0.001 % phosphorus by mass to meet a set of standards. If a sample of the substance has a mass of 140 grams, it follows that the maximum mass, in grams, of phosphorus the sample can contain to meet the standards is 0.001 % of 140 , or 0.001 100 140 , which is equivalent to 0.00001 140 , or 0.0014 . Note that .0014 and 0.001 are examples of ways to enter a correct answer.

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