Take the percent and change it into a decimal, you do this by moving the decimal two places to the left. This makes 20 become .20.
Next take .20 and multiply it by 45.
Answer: 9lb.
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45*.2 = 9 Since you want OFF 45lbs, 45-9 which is 36 So 20% off of 45lbs is 36lbs Hope this helped! :)
$45
20 percent of 45 = (20 / 100) x 45 = 9.
45% of 20 = 45% * 20 = 0.45 * 20 = 9
15% of 45 pounds= 15% * 45= 0.15 * 45= 6.75 pounds