PSAT Math Multiple-Choice Question 824: Answer and Explanation

Question: 824

If n represents m percent of x, how could the value of n be calculated?

Correct Answer: A

Explanation:

(A) The formula for calculating a percentage is .

So m represents the overall percentage, n represents the part, and x represents the whole. Plugging these values into the original equation gives:

Alternatively, you can rephrase the question using concrete numbers:

"If 10 represents 50 percent of 20, how can we calculate the value of 10?" The only solution that gives the correct answer is choice (A):

→

This equation is in the same format as the equation shown in choice (A):