PSAT Math Multiple-Choice Question 116: Answer and Explanation

Question: 116

A small glass tube used in a scientific lab can hold no more than 8.50 milliliters of liquid needed for a certain experiment. Approximately how many teaspoons can the beaker hold? (1 teaspoon ≈ 4.93 milliliters)

• A. 1.72
• B. 3.57
• C. 6.78
• D. 41.91

Correct Answer: A

Explanation:

A

The question asks for the number of teaspoons a glass tube can hold. Begin by reading the question to find information on the glass tube. The question states that a glass tube can hold the 8.50 milliliters of liquid needed and that 1 teaspoon = 4.93 milliliters. Set up a proportion to determine the volume, making sure to match up the units: . Cross-multiply to solve for x: 8.50 = 4.93x. Divide both sides of the equation by 4.93 to get x ≈ 1.72 teaspoons. The correct answer is (A).