SAT Math Multiple Choice Question 858: Answer and Explanation
|Number of Graduates by Focus and Year|
|School Focus (District 1)||2013||2014|
|Career and Technical|
|Fine and Performing Arts||146||151|
|Science, Technology, Engineering, and Math (STEM)||163||163|
3. A magnet school is a free public school that has a focused theme. According to thetable above, what was the increase in the total number of graduates in five of thesemagnet schools in District 1 from 2013 to 2014?
- A. 25
- B. 30
- C. 35
- D. 40
Correct Answer: A
Category: Problem Solving and Data Analysis / Statistics and Probability
Strategic Advice: A question like this is as straightforward as it sounds-so be extra careful with your calculations and you are sure to get it correct.
Getting to the Answer: Don't try to keep track of the changes in your head. Instead, jot them down to the right of the last column. Be sure to include a positive or negative sign to indicate whether each change is an increase or a decrease. Then add the changes to find the total increase.
To add quickly, notice that the first two changes cancel each other, so the total increase is 20 + 5 = 25, which is (A).