Digital PSAT Math Practice Question 156: Answer and Explanation

Question: 156

Between which two-year period does the Company X stock price undergo the greatest percentage increase?

• A. Between 1983 and 1984
• B. Between 1986 and 1987
• C. Between 1988 and 1989
• D. Between 1989 and 1990

Correct Answer: B

Explanation:

(B) Percent change is given by the following equation:

We can rule out choice (A) since stock price decreased between 1983 and 1984. Calculate the approximate percent increase for the remaining answer choices.

Choice (B):

Choice (C):

Choice (D):

Therefore, choice (B) has the greatest percent increase.