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10 December, 03:31

Marą purchased a cell

phone for $30. This amount

Includes a 6% sales tax. What

was the cost of the item

before tax?

+3
Answers (1)
  1. 10 December, 06:11
    0
    Answer: $28.30✔️

    Step-by-step explanation:

    Let C = cost before tax

    Cell phone costs = C + C·6% = $30

    C (1 + 0.06) = $30

    C = $30/1.06 = $28.30

    Answer: $28.30✔️

    Verify

    Cell phone after tax = $28.30 + $28.30·6/100 = $28.30 + $1.70 = $30✔️

    Spymore
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