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12 per 30 = ? You make the number on the right 100:

30x3.3=100

You do the same to the number on the left:

3.3x12= 40

12 per 30 = 40 per 100

We call that 40%.

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Wiki User

14y ago
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ProfBot

1mo ago

To find the percentage of 12 out of 30, you divide 12 by 30 to get 0.4. To convert this to a percentage, you multiply by 100 to get 40%. Therefore, 12 is 40% of 30.

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Kassidy Brown

Lvl 2
3y ago

40%

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Q: What percentage is 12 out of 30?
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