SAT Math Multiple Choice Practice Question 275: Answer and Explanation

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Question: 275

11. If the average (arithmetic mean) of a, b, 4, and 10 is 8, what is the value of a + b?

A. 4
B. 6
C. 9
D. 15
E. 18

Correct Answer: E

Explanation:

E Since the average of four numbers is 8, the sum of those four numbers must be . Therefore Subtracting 14 from both sides gives .

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