PSAT Math Multiple-Choice Question 355: Answer and Explanation

Question: 355

Seven out of every 250 students at a certain university who take a test are expected to score at least 90 percent. If the university gives this test to 12,000 students, how many would be expected to score at least 90 percent?

• A. 176
• B. 224
• C. 300
• D. 336

Correct Answer: D

Explanation:

D

Difficulty: Easy

Category: Ratios and Proportions

Getting to the Answer: Assign a variable, say n, to the number of students expected to score at least 90 percent when 12,000 students take the test. Then, set up a proportion and solve for n:

The correct answer is (D).