你好!祝你学习愉快,天天向上!
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方案(1)设标价为x元。
(120%-1)x+10%x×5=0.7x
(1.2-1)x+0.5x=0.7x
0.2x+0.5x=0.7x
...
你好!祝你学习愉快,天天向上!
------------------------------------------------
方案(1)设标价为x元。
(120%-1)x+10%x×5=0.7x
(1.2-1)x+0.5x=0.7x
0.2x+0.5x=0.7x
...