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16.66% of 33.33% of 66.66% of ? = 30

Correct answer: C. 810

  • A. 90
  • B. 270
  • C. 810
  • D. 240

Explanation

The intended values are 16.66% = 1/6, 33.33% = 1/3, and 66.66% = 2/3. Their product is 1/6 x 1/3 x 2/3 = 1/27, so ? ÷ 27 = 30 and ? = 30 x 27 = 810, option c. Option b, 270, results from using only one factor of 9 instead of the full product denominator 27.

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