Answer:
$315
Explanation:
The before-tax cost of the wood stove would comprise of 100% sales price plus 5% sales tax as hinted.
If 5%=$15=sales tax
before-tax sales price=100% sales price+5% sales tax
before-tax sales price=105%
sales tax of 5%=$15
1%=$15/5
1%=$3
105%=$3*105
105%(before tax sales price)=$315
