SSAT Math Question 613: Answer and Explanation
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Question: 613
1. The average of 3 numbers is 18. What is 2 times the sum of the 3 numbers?
- A. 108
- B. 54
- C. 36
- D. 18
Correct Answer: A
Explanation:
Use an Average Pie to solve this question: 
. Place 3 in the # of items portion and 18 in the average place. Multiply these numbers to find the total, which is 54. The question asks for twice the sum, which is the same as twice the total, so 2 × 54 = 108. The correct answer is (A).