Multiple choice general knowledge math & puzzles

If 20% of a number is 25. Then 50% of the squares of the individual digits of the original number is…………

  1. 13.50

  2. 12.50

  3. 15.0

  4. 11.25

  5. 13.625
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C Correct answer
Explanation

If 20% of x = 25, then x = 125. The individual digits are 1, 2, and 5. The squares are 1, 4, and 25. The sum of squares is 1+4+25 = 30. 50% of 30 is 15.0.

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