400 / 100 X 20 = 80 You divide what ever you are working from by 100 and times it by the percentage to find the amount you were originally looking for!
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To find 5 percent of a number, multiply the number by 0.05. In this instance 0.05 x 400 = 20. Therefore, 5 percent of 400 is equal to 20.
20% = 1/5, so 400/5 = 80; alternatively 20 x 400/100
20% of 400 $ = 80 $. Here's how! 20% means 20/100 = 0.2 of means Product ie; Multiplication. Therefore, 20% of 400 $ = 0.2 * 400 $ = 80 $.
72 pounds
20% of 170000 pounds = 170000*20/100 = 34000 pounds