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17 December, 11:54

Jerome bought a sweater that was on sale for 20 percent off. Jerome paid $25.10 for the sweater, including sales tax of 8.25 percent. Write an equation that can be used to find the original price of the sweater.

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  1. 17 December, 12:00
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    The $25.10 is 108% of the sale price.

    $25.10 = 1.08n divide both sides by 1.08 = $23.24

    To find the original price we must say that the sale price is 80% of the original price.

    So we can write $23.24 = 80% of n or $23.24 =.8n Dividing both side by. 8 we get $29.05.

    So how can we do both of these in one equation? Here is one way.

    ($25.10 / 1.08) =.8n (I wrote it as two equation above since it explains it better)

    There are other equations that will work too.
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