If a ratio is r = a/b, what is its inverse 1/r?
Ab/a
B-a/b
Ca²/b
Db²/a
Answer & Solution
Correct answer: A. b/a
1. Start with r = a/b.
2. The inverse is 1 divided by r, which flips the fraction.
3. So 1/r = b/a.
_Source: Wikipedia, Rate (mathematics), Properties and examples_
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