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If one-fifth of one-fourth of a number is 12, then one-half of that number is:

  • A.60
  • B.120
  • C.96
  • D.240

Answer: B

\[ \frac{1}{5} \times \frac{1}{4} x = \frac{x}{20} = 12 \quad\Longrightarrow\quad x = 240 \]

\[ \frac{240}{2} = 120 \]

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