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27 November, 13:06

The sales tax for an item was $8.40 and it cost $420 before tax. Find the sales tax rate. Write your answer as a percentage.

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  1. 27 November, 13:18
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    2 % is the tax rate

    Step-by-step explanation:

    The sales tax is equal to the original price of the item times the sales tax rate

    sales tax = original price * tax rate

    We know the original price and the sales tax

    8.4 = 420 * tax rate

    Divide each side by 420

    8.4/420 = 420/420 * tax rate

    .02 = tax rate

    Multiply by 100% to get in percent form

    2 % is the tax rate
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