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5吨增加______%是6吨,16千克比______千克少20%.
人气:169 ℃ 时间:2020-04-28 06:52:45
解答
(6-5)÷5,
=1÷5,
=0.2,
=20%;
16÷(1-20%),
=16÷0.8,
=20(千克).
故答案为:20,20.
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