Respuesta :
$21 divided by 100%= 0.21
multiple 0.21 by 0.20= 4.20
add 4.20 to $21.00= $25.20
answer is $25.20 original price
multiple 0.21 by 0.20= 4.20
add 4.20 to $21.00= $25.20
answer is $25.20 original price