Multiple choice

If the average of $3, 4$, and $x$ is $2$, then find $x$.

  1. $-15$
  2. $-1$
  3. $-8$
  4. $-6$
  5. $-2$
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Average = (3 + 4 + x) / 3 = 2. 7 + x = 6. x = -1.

AI explanation

The sum of the three numbers must be 3 times 2 = 6. Adding the known values gives 3 + 4 = 7. Therefore, x = 6 minus 7, which is negative 1.

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