15 percent off 999 dollars: $999 x 0.15 = $149.85
899.110% off of 999= 10% discount applied to 999= 999 - (10% * 999)= 999 - (0.10 * 999)= 999 - 99.9= 899.1
20% off leaves 80% still on.0.8 x $999 = $799.20
20 percent of 55 is 55*(20/100) = 11
30% off of 55 = 38.530% off of 55= 30% discount applied to 55= 55 - (30% * 55)= 55 - (0.30 * 55)= 55 - 16.5= 38.5
40% off of $55 = $55 - (0.4 x $55) = $33
17.99 x .55 = 9.89
74.25.
$55
13.75
If we are taking 40% off of a number the quickest way to do this is to calculate what 60% of that number is.60% of 999 = 60/100 * 999 = 599.4
55% of 119.99 = 119.99*55/100 = 66.9945