PSAT Math Multiple-Choice Question 378: Answer and Explanation

Question: 378

An amusement park is building a scale model of an airplane for a three-dimensional ride. The real airplane measures 220 feet from nose to tail. The amusement park plans to make the model airplane 36 feet long. If the wingspan of the real plane is 174 feet, approximately how many feet long should the wingspan on the ride's model airplane be?

• A. 17
• B. 28
• C. 35
• D. 45

Correct Answer: B

Explanation:

B

Difficulty: Medium

Category: Ratios and Proportions

Getting to the Answer: Set up a proportion. Try writing the proportion in words first, then fill in the values:

The ride's model airplane wingspan is approximately 28 feet, (B).