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Nine percent of 300 dollars is $27
.9(90%)*30 = 27, so 30-27 = 3.
Change the ratio into a fraction and change the fraction into a percent. For example: 9:100 - Ratio 9/100 - Fraction 9% - Percent Example 2: 5:20 5/20 5/20 = 25/100 (You denominator *20* x *5* will equal 100) 25%
45% = 45/100 It can also be written as 9/20
27%