50÷(200+50),
=50÷250,
=20%;
答:降低了20%.
一件上衣现价200元,比原价降低了50元,降低了百分之几?
一件上衣现价200元,比原价降低了50元,降低了百分之几?
数学人气:868 ℃时间:2019-10-17 02:51:35
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