20 dollars is 20 percent of 100 dollars.
30% off of 20 dollars = 70% of 20 dollars = 20*70/100 = 14 dollars.
20% off of 324 dollars = (100-20)% of 324 dollars ie 80% of 324 dollars = 324*80/100 dollars = 259.20 dollars
20% off of 156 dollars = 80% of 156 dollars = 156/80/100 = 124.8 dollars
20% off 37 dollars = 80% of 37 dollars = 37*80/100 = 29.60 dollars.
20 dollars is 20 percent of 100 dollars.
30% off of 20 dollars = 70% of 20 dollars = 20*70/100 = 14 dollars.
20% off of 324 dollars = (100-20)% of 324 dollars ie 80% of 324 dollars = 324*80/100 dollars = 259.20 dollars
40% off of 20 dollars = 60% of 20 dollars (100 - 40 = 60) = 20*60/100 = 12 dollars
20 ÷ 100 × 50.00 = 10
20% off of 5 dollars = 80% of 5 dollars = 5*80/100 = 4 dollars.
20% off of 156 dollars = 80% of 156 dollars = 156/80/100 = 124.8 dollars
20% off 37 dollars = 80% of 37 dollars = 37*80/100 = 29.60 dollars.
20% off of 370 dollars = 80% of 370 dollars = 370*80/100 = 296 dollars
20 dollars are 100 percent. You want 40 percent off, that means you want 60 percent. 20/100 = 0.2 is 1 percent that value times 60 gives the wanted 60 percent. You have to pay only 0.2 times 60 = 12 dollars instead of 20 dollars.
80 % off 65 dollars = 20% left of 65 dollars = 65*20/100 = 13 dollars.
It should be $99.80