Multiple choice general knowledge Which number is the tenth part of a quarter of the fifth part of half 12,000 ? 1250 250 45 30 Reveal answer Fill a bubble to check yourself D Correct answer Explanation Working backwards: half of 12,000 = 6,000; fifth part of 6,000 = 6,000 ÷ 5 = 1,200; quarter of 1,200 = 1,200 ÷ 4 = 300; tenth part of 300 = 300 ÷ 10 = 30. The answer is 30.