45*.2 = 9
Since you want OFF 45lbs,
45-9 which is 36
So 20% off of 45lbs is 36lbs
Hope this helped! :)
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20% off of 35 pounds = 100-20 = 80 percent of 35 pounds = 35*80/100 = 28 pounds
37 pounds - 20% = 29.6 pounds
18 pounds - 20% = 14.4 pounds.
It is 4 pounds.
17 pounds.