Multiple choice general knowledge math & puzzles Find the number whose double is greater than its half by 30 20 30 25 23 Reveal answer Fill a bubble to check yourself A Correct answer Explanation Let the number be x. The problem states 2x - x/2 = 30. Multiplying by 2 to clear the fraction: 4x - x = 60, so 3x = 60. Solving for x gives x = 20. Distractors like 30 or 25 do not satisfy the equation.