Respuesta :

6.05 is the answer for your question
5% = 5/100 = .05 (move decimal 2 spaces)
$6.00×.05=.3
.3+$6.00=$6.30

faster way

$6.00×1.05 = $6.30 (this counts the 100% that is the sale price plus the extra 5% tax [105%])