David W. answered 03/15/16
Tutor
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Experienced Prof
The ratio of a to b can be written as a:b or as a/b.
Given:
2a = 6b
2a/b = 6 [divide both sides by b]
a/b = 3/1 [divide both sides by 2]
The ratio of a:b is 3:1. [note that 2a = 6b]