math word problem

Question

There is a sales tax of
$6
on an item that costs
$63
before tax. A second item costs
$210
before tax. What is the sales tax on the second item?

Answer 1

We need to know what percentage of $63 equals $6.

6 = (x/100)(63)

x = (6/63)(100) = 9.52381%

 

Your sales tax is 9.52381% or .0952381

 

210(.0952381) = $20

Answer 2

You must find the % that the sales tax represents, then apply this to the $210 dollars.

As an example, if you paid $4 tax on an item that cost $40 before tax, the tax would represent

$4/$40 = 0.1, or 10% sales tax.

Then, on an item that was $60 dollars before tax, the tax would be 60 * 0.1 = $6

Applying this same idea should get you the answer.