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20 April, 16:25

The amount of sales tax on a purchase varies directly as the price of the item varies. If a computer costs $400 before tax and the tax is $30 tax, which of the following equations is a correct step in solving for how much tax is needed for a computer that costs $500?

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  1. 20 April, 16:36
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    The answer would be 500 : 7.5=

    I found this answer by finding the tax rate of the first item, which was 7.5%.
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