One-Variable Data: Distributions and Measures of Center and Spread

SAT Math· difficulty 3/5

The mean of 8 numbers is 14. When one number is removed, the mean of the remaining 7 numbers is 13. What number was removed?

A
$20$
B
$19$
C
$21$
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D
$22$

Explanation

8 \times 14 = 112

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