Caleb bought groceries for $68.48, including sales tax. If sales tax was 7%, how much was the groceries before tax? pls help me

Question

Caleb bought groceries for $68.48, including sales tax. If sales tax was 7%, how much was the groceries before tax?
pls help me

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bonexptip 4 mins 2021-07-22T20:30:09+00:00 1 Answers 0 views 0

Answers ( )

    0
    2021-07-22T20:31:29+00:00

    Answer:

    $64.00

    Step-by-step explanation:

    Let the amount for the groceries before tax be Y

    If the cost inclusive of tax at 7% is $68.48, then

    Y + 7% * Y = $68.48

    100%Y + 7%Y = $68.48

    107%Y = $68.48

    Recall that 107% = 1.07

    1.07Y = $68.48,

    Divide both sides by 1.07

    Y = $68.48/1.07

    Y = $64.00

    Hence the cost of the groceries before tax is $64

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