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21 May, 01:43

To decrease an amount by 20%, what do you multiply by?

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  1. 21 May, 05:25
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    An entire amount is 100%.

    If you decrease it by 20%, you end up with 80% of the entire amount.

    To find 80% of an amount, multiply the amount by 0.8

    Answer: multiply by 0.8
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