150 x (1 - 20/100) = 150 x 0.8 = 120
Therefore, 20 percent off 150 pounds is 120 pounds.
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20 percent of 150 is 120.00 or 30.00 off.
20% off of 35 pounds = 100-20 = 80 percent of 35 pounds = 35*80/100 = 28 pounds
18 pounds - 20% = 14.4 pounds.
37 pounds - 20% = 29.6 pounds
10.4 pounds