Whats 1/3 off 39.75?

Titanium has found one their OF   39.75

His correct answer was 13.25     

However,

If you want 1/3 OFF 39.75

the answer would be     39.75-13.25 = 26.5    

39.75/3=13.25

you can check your work by doing 13.25*3

use a calc next time if you have trouble in this kind of situation