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10 percent of 45 pounds is 4.5 pounds.
33.75. To calculate percent off, convert the percent into a decimal. So 25 percent = .25 as a decimal. Then multiply this by 45. .25*45 = 11.25. Then subtract this from 45. 45 - 11.25 = 33.75. You can also think of 25% as 1/4, and divide 45 by 4.
66
25% of $45 is $11.25. $45 minus $11.25 is $33.75
20 percent is also written as .2 To find 20 percent of 45, multiply 45 by .2 = 9