Multiple choice If 10 % of M = 20 % of N then M : N =? 10 : 1 5 : 1 1 : 2 2 : 1 Reveal answer Fill a bubble to check yourself D Correct answer Explanation Given 0.10 * M = 0.20 * N, dividing both sides by 0.10 gives M = 2 * N. Therefore, M/N = 2/1, or M:N = 2:1.