PSAT Math Multiple-Choice Question 44: Answer and Explanation

Question: 44

If 10 pecks are equivalent to 2.5 bushels, then 4 bushels are equivalent to how many pecks?

• A. 4
• B. 10
• C. 12.5
• D. 16

Correct Answer: D

Explanation:

D

The question asks for an unknown value in relation to three known values. This relationship is a proportion, or direct variation, so set up two equal fractions, being sure to match the units. . Solve for x by cross-multiplying: (4)(10) = (2.5)(x). Divide both sides of the equation by 2.5 to get x = 16. The correct answer is (D).