If 12% is 25 then 100% is (25/12) x 100 ie 208.33
If it's 12% per year, compounded annually, then it is: 100 * (1 + 0.12)-2 = 79.72
% rate = 16.216%
A savings of 6.54 and a discount price of 47.96
$68.64
The amount saved is $9.35 and the sale price is $68.56
% rate = 12/15 * 100% = 80%
% rate = 12/104 * 100% = 11.54%
percent for 12/19 = 63.16%% rate:= 12/19 * 100%= 0.6316 * 100%= 63.16%
% rate = 12/16 * 100% = 75%
rate= (12/9) x 100% = 133.33%
% Rate= (12/54) x 100% = 22.22%