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A number increased by 20% of itself becomes 96. The original number is:

  • A.76
  • B.78
  • C.80
  • D.84

Answer: C

Increasing by 20% multiplies the number by 1.2, so \(1.2x = 96\) and \(x = 80\). Check: 20% of 80 is 16, and \(80 + 16 = 96\). Subtracting 20% from 96 gives 76.8, which is not the same thing - percentages are taken of the original, not the result.

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