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Percent- multiply amt x4.5%.

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12y ago
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Q: How do you find 4.5 of an amount?
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An item sells for 45 after a 20 percent discount find the original amount?

$56.25$45 is 80% of the original price45/.80=56.25

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I think you subtract the new amount from the original amount and then move the decimal over twice to the right of the number and that's your percent. :)

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You take the amount of sides it has and divide it by 360 e.g. if a polygon has 8 sides you do: 360 / 8 = 45

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