The ratio of the arithmetic mean of two numbers to one of the numbers is 4:7. What is the ratio of the smaller number to the larger number?	Choose the correct answer:
A) 1:8 B) 1:7 C) 1:6 D) 1:5 E) 1:4
For two numbers, the arithmetic mean is the middle of the two numbers.   The ratio of the mean to the larger number is 4:7, thus the smaller number must have a ratio of 1.   The ratio of the smaller number to the larger number is 1:7.   The answer is 1:7.
<result>B</result>
The ratio of the arithmetic mean of two numbers to one of the numbers is 4:7. What is the ratio of the smaller number to the larger number?