Read the following SAT test question, then click on a button to select your answer.

There are n students in a biology class, and only 6 of them are seniors. If 7 juniors are added to the class, how many students in the class will not be seniors?

  1. n – 3

  2. n – 2

  3. n – 1

  4. n + 1

  5. n + 2

 

 

Correct Answer: D

Here's Why:

At first, there are n students in the class, and 6 of them are seniors. It follows that initially n – 6 students are not seniors. If 7 juniors are added to the class, there will be n – 6 + 7, or n + 1, students in the class who are not seniors.

Difficulty: Medium

Question Type: Standard Multiple Choice