So... First, you have to multiply 20 by .10. then you subtract the answer from 20. You should get 18 as your answer.
20*.10= 2
20-2=18
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700 decreased by 10 percent = 630
32 - 20% = 25.6
10
20% = 1/54 + 4 + 4 + 4 + 4 = 2020 decreased by 20% is 16, therefore the answer is 20
45% decrease.