Let x be your original price.
(1.00)x-(.40x)=40 100% minus 40% of the price is $40
.60x=40 60% is the difference in the prices
x=40/.60 divided both sides by 60%
x is about $6.67 with a round off error.
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96.
80-80*20%=64
if the power of ten is a negative number it's smaller than one.
-677.375 is 150% less than 1354.75. "150% less than" means "100 percent of minus 150 percent of." So: x is 0% more/less than x. 2x is 100% more than x. 3x is 200% more than x. Zero is 100% less than x, and -x is 200% less than x.
The smallest whole number is ' 1 '. 42% is another way to write the number 0.42 and that's less than ' 1 ' . So 42 percent doesn't have what it takes to be a whole number, no matter what you do to it.