If 0.3 of a number is equal to 0.06 of another number, the ratio of the numbers i  Choices
A) 3 : 15  B) 1 : 2  C) 3 : 20  D) 20 : 3  E) none

Rationale: "sol . 0.3 a = 0.06 b â ‡ ” a / b = 0.06 / 0.30 = 6 / 30 = 3 / 15 . â ˆ ´ a : b = 3 : 15 . answer a"
Answer: A