Divide both parts of 30:36 by the GCF 6.
The ratio 30:36 reduces fully to 5:6
Therefore, 30:36 is equivalent to 5:6
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We can double both sides of 5:6 to get to 10:12
Or we can triple both sides of 5:6 to get 15:18
Or we can quadruple both sides of 5:6 to get 20:24
And so on.
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Answer: The following ratios are equivalent to 30:36
5:6
10:12
15:18
20:24
There are infinitely many possible answers.