PSAT Math Multiple-Choice Question 121: Answer and Explanation

Question: 121

If one of the females is selected at random, what is the approximate probability that the student indicated volunteering as her summer plans?

• A. 0.07
• B. 0.15
• C. 0.25
• D. 0.56

Correct Answer: B

Explanation:

B

The question asks for a probability, which is defined as . Read the number of possible outcomes table carefully to find the numbers to make the probability. There are 14 females who indicated volunteering, so that is the # of outcomes that fit requirement. There are 95 total females, so that is the total # of outcomes. Therefore, the probability is . The answer choices are expressed as decimals, so divide 14 by 95 to find that this is approximately 0.15. The correct answer is (B).