The sum you require is 6 x 0.35. This gives you how much 35% of 6 actually is. Now minus this number from 6, to find out what 6 dollars with 35% off happens to be.

If you divide $55.00 by 100 you can find 1%, which is $0.55, all you then do is multiply by 35 to find 35%, which is $.055 x 35 = $19.25. So if you take $19.25 off $55.00 that is $55.00 with 35% off and it equals $35.75