SAT Math Multiple Choice Question 870: Answer and Explanation

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Question: 870

Tropical StormsHurricanesMajor Hurricanes (Cat. 3+)Total
1990–19941623544
1995–19995412066
2000–200418371873
2005–200923371878
Total9117574340

15. The table above summarizes storm activity in the Atlantic Ocean between 1990 and 2009.What portion of the storms between 1990 and 1999 were classified as major hurricanes?

  • A. 0.1136
  • B. 0.2176
  • C. 0.2273
  • D. 0.8091

Correct Answer: C

Explanation:

C

Difficulty: Easy

Category: Problem Solving and Data Analysis / Statistics and Probability

Strategic Advice: When there is a lot of data presented in a table, be sure to focus only on the information that the question asks about (here, 1990 to 1999 and major hurricanes).

Getting to the Answer: According to the table, between 1990 and 1999 (which includes 1990-1994 and 1995-1999), there were a total of 44 + 66 = 110 storms. Of these, 5 + 20 = 25 were major hurricanes. Therefore, the portion you're looking for is, which is approximately 0.2273. (C) is the correct answer.

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