Multiple choice general knowledge math & puzzles

If one-third of one-fourth of a number is 15,then three-tenth of that number is

  1. 35

  2. 36

  3. 45

  4. 54

Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Let the number be x. Then (1/3)×(1/4)×x = 15, so x/12 = 15, giving x = 180. Three-tenth of this number is (3/10)×180 = 54. Option D is correct. Option A (35) and B (36) are incorrect, and C (45) would be one-fourth of 180, not three-tenths.