PSAT Math Multiple-Choice Question 273: Answer and Explanation

Question: 273

Alex bought a box of 500 nails to use for building a treehouse. If Alex uses of the nails for the walls and of the nails on the floor, how many nails has he used?

• A. 300
• B. 475
• C. 200
• D. 325

Correct Answer: D

Explanation:

Alex used 325 nails because converting the fractions shows that he used + = of the nails. 500/1 × 13/20 = 325 nails. See Lesson: Multiplication and Division of Fractions.