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3 January, 23:16

There is a sales tax of $6 on an item that costs $88 before tax. The sales tax on a second item is $21. How much does the second item cost before tax?

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  1. 4 January, 00:01
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    6 / 88 = 21/x

    cross multiply

    (6) (x) = (21) (88)

    6x = 1848

    x = 1848/6

    x = 308 <==
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