What is the cost of a $36.00 sweater at 7% sales tax?

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Answer 1 · 2017-01-23T20:52:40

The total cost will be $38.52.

"7% sales tax" tells us that 7% of the cost of the item will be added on.

So the tax will be 7% of $36 (Remember that $7%=7/100=0.07$ )

"7% of 36" $= 0.07 xx $36 = $2.52$

$2.52 will be added to $36.00 to give the total cost

$$2.52 + $36.00 = $38.52$

The final cost will be $38.52

In a more general case, the following equation can be written to find the total cost:

$"cost" + (% "tax" xx "cost") = "total cost"$

or

$"cost" + (0.07 xx "cost") = "total cost"$

which can be simplified to

$(1 + 0.07) xx "cost" = "total cost"$

or

$1.07 xx "cost" = "total cost"$ where any tax % can be substituted in for the 0.07