129 - 30% = 129 x (1 - (30/100)) = 129 x 0.7 = 90.3
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Well, isn't that a happy little question! To find 10% off of 129, you can simply multiply 129 by 0.10, which equals 12.9. So, 10% off 129 is 12.9. Remember, mistakes are just happy accidents in the world of math!
"30 percent off" means "70 percent on" .70% = 0.70.7 x $130 = $91
Which do you mean - 30% off or 30% of
30 percent of 300 is 90, leaving 210.
30% off, therefore (90-30%), 70%, of 149.95 which is 104.965