$90
Okay. The 'full amount' of something is one-hundred percent. Half of one hundred is fifty. For example, if something costs five-hundred dollars and it was on special in a shop, it would cost two hundred and fifty dollars. So if an advertisement says something is fifty percent off, it means half off the original price.
The sale price is $504.00
One Hundred and Seventy-One dollars - or - $171
50%
$296
A savings of $111.60 and a sale price of $12.40
The amount after the discount is $117.00
17 dollars.
40 dollars
70% of 17.50 taken off of it leaves 5.25 as the total.
40% off = 60% So 60% of 105 dollars = 105*60/100 = 63 dollars.