Multiple choice general knowledge sports

If x=y=2z and xyz=256 then what is the value of x?

  1. 12

  2. 8

  3. 16

  4. 6
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Since x=y=2z, all three variables are equal. Let x=2z, y=2z, then xyz = (2z)(2z)(z) = 4z^3 = 256, so z^3 = 64 and z = 4. Then x = 2z = 8. This requires recognizing that x=y, then substituting and solving.

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