If 0.2 of a number is equal to 0.08 of another number, the ratio of the numbers is :	Choose one:	A) 2 : 3	B) 3 : 4	C) 2 : 5	D) 20 : 3	E) 30 : 7

Rationale: "0.2 a = 0.08 b - > a / b = 0.08 / 0.20 = 8 / 20 = 2 / 5 : . a : b = 2 : 5 answer : c"
Answer: C