91 + (.30 * 91) = 118.3
Subtracting 30 percent from 91 gives 91 x (1 - 30/100) = 91 x 0.7 = 63.7.
30% off of 91 = 91 - (0.3 x 91) = 63.7
x - 30% of x = 91 → 70% x = 91 → x = 91÷ 70% = 130
30 percent off of 77 plus 7 percent tax = 57.67
"30 percent off" means "70 percent on" .70% = 0.70.7 x $130 = $91
48% plus 30% = 78%30% more than 48% = 62.4%
30 dollars plus 9.5 percent tax = 32.85
3 + 15 = 18
40% + 30% = 70%
3
532.44 + (30%) = 692.17
25% + 30 = 30.25