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14 June, 20:30

A pack of cinnamon scented pencils sells for $4.00. What is the sales tax if the total cost of the pencils is $4.32? (6th grade)

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  1. 14 June, 21:38
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    (x% * 4) + 4 = 4.32

    Solve for 'x':

    4x + 4 = 4.32

    Subtract 4 to both sides:

    4x = 0.32

    Divide 4 to both sides:

    x = 0.08

    Multiply by 100:

    0.08 * 100 = 8%

    An easier way to do this is to find the percent increase.

    First, subtract the two numbers.

    4.32 - 4.00 = 0.32

    Divide this to the original amount:

    0.32 / 4.00 = 0.08

    Multiply by 100:

    0.08 * 100 = 8%

    We basically did all the steps from our equation above.
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