The ratio of the arithmetic mean of two numbers to one of the numbers is 3:5. What is the ratio of the smaller number to the larger?	Choose the correct choice from the following
A) 1 : 5	B) 1 : 4	C) 1 : 3	D) 1 : 2	E) 2 : 3

Rationale: "let the numbers be a , b acc . to problem , ( a + b ) / 2 ∗ a ( a + b ) / 2 ∗ a = 3 / 53 / 5 1 / 21 / 2 + b / 2 ∗ ab / 2 ∗ a = 3 / 53 / 5 b / ab / a = 1 / 51 / 5 ans . a"
Answer: A