Question

$21.25 with a 4.25% sales tax?

Answer 1

`$21.25` with a `4.25%` sales tax would be `30.28`.

Explanation:

`4.25% = 0.425`
`100% =1`
Adding sales tax to the price of something is equal to paying for 100% of the item plus to tax percentage:
`21.25*1+21.25*0.425`
`=21.25*(1+0.425)`
`=21.25*1.425*`
`=30.28125`
In dollars, that would be `$30.28` because dollars only go up to two decimal places.