The inverse ratio of 9: 2: 1 is? Choose the correct choice from the following choices: A) 1:9:18 B) 2:9:18 C) 2:7:18 D) 2:13:18 E) 2:9:15
1/9: 1/2: 1/1 = 2:9:18   ANSWER:2:9:18
<result>B</result>
The inverse ratio of 9: 2: 1 is?