27.3 is the answer. But you can round it off to 27.
30 percent 'off' leaves 70 percent 'on'.70 percent of 199.99 = (0.7 x 199.99) = 139.993
"30 percent off" means "70 percent on" .70% = 0.70.7 x $130 = $91
The 30% taken off is $30. The 70% left on is $70.
30% off of 195.00 = 70% of 195.00 = 195.00*70/100 = 136.50
30% off of 154.00 = 70% of 154 = 154*70/100 = 107.80
70% off = 30% left of 20,000 which is 20,000*30/100 = 6,000
70% off of 25.50 means . . .-- 17.85 (70%) off-- 7.65 (30%) left on
30% off of 8.50 = 70% [left] of 8.50 = 8.50*70/100 = 5.95
30% off 99 = 70% left of 99 = 99*70/100 = 69.3
30% off of 42 = 70% of 42 = 42*70/100 = 29.40
30% off of 14.99 = 70% [remaining] of 14.99 = 14.99*70/100 = 10.493
30% off of 54 = 70% of 54 = 54*70/100 = 37.8