$54*(1-0.2)=$43.20
20% of 5400= 20% * 5400= 0.2 * 5400= 1080
4 dollars off, leaving 16 dollars.
30% off of 20 dollars = 70% of 20 dollars = 20*70/100 = 14 dollars.
20% off 148 dollars is $118.40
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 370 dollars = 80% of 370 dollars = 370*80/100 = 296 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 5 dollars = 80% of 5 dollars = 5*80/100 = 4 dollars.
09.20 dollars is 20 per cent OF 46.00 dollars. 20 per cent OFF of 46.00 dollars is 46.00 - 9.20 = 36.80 dollars.
40% off of 20 dollars = 60% of 20 dollars (100 - 40 = 60) = 20*60/100 = 12 dollars
80 % off 65 dollars = 20% left of 65 dollars = 65*20/100 = 13 dollars.