



 
Joeann, A discount expressed as a percentage is a percentage of the original price. Thus you want $10 as a percentage of $40. $10 as a fraction of $40 is 10/40 = 1/4. Expressed as a percent (per 100 since cent means 100) this is 1/4 × 100 = 25%. Penny  


Math Central is supported by the University of Regina and The Pacific Institute for the Mathematical Sciences. 