neriah30
02.02.2020 •
Mathematics
Marą purchased a cell
phone for $30. this amount
includes a 6% sales tax. what
was the cost of the item
before tax?
Solved
Show answers
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Ответ:
$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
$28.30✔️
VerifyCell phone after tax = $28.30 + $28.30·6/100 = $28.30 + $1.70 = $30✔️
SpymoreОтвет:
A
Step-by-step explanation: