推荐回答(6个)
首先想:牛贩亏的钱去哪里就好办了(都亏给了小黑)。邻居没亏没赚。
小黑拿走了3斤价值48×3=144元的牛肉,还有找回的50元。
所以牛贩总共亏了144+50=194元。
解疑:很多人以为牛贩后来又赔给邻居200元,所以就算成394元。但是邻居也曾真金白银的给多200元真币给牛贩啊,牛贩只是在这200元中拿出50元给小黑,自己还留着150元真币啊,自掏50元就凑够200元还邻居了。自掏的50元就是亏的,加上牛肉进货价144元,所以总共亏194元。
化繁为简,最后小黑用假币得到了3斤肉和50元钱,这就是牛贩赔的钱。即48×3+50=194元
首先按进价算:3斤牛肉48*3=144元
找给小黑50元
又赔给人家穿钱的200元
合计为:144+50+200=394元
纯数学角度:只要理解谁赚了就行,只有3个人参与这个买卖事件,小黑拿200假钱赚到了3斤牛肉加50现金,邻居不赚不亏,所以剩下的牛肉贩亏了,总共3×48+50=194元。
从小黑那里收到的200是假钱,那么亏了三斤牛肉和找给小黑的50元,一共是3×48+50=195元,邻居给了200又还回去200,没有亏钱,所以牛肉贩一共亏了194元。
【找邻居穿零钱】
(1)牛肉贩给出:第一次是将收到的假钞直接给邻居帮忙穿开200元,第二次是将自己的真钞200元给邻居
(2)牛肉贩收到:邻居穿给牛肉贩200元零钱(3)牛肉贩与邻居穿钱损失:200-200=0元
【牛肉贩亏损分析】
小黑给牛肉贩假钞200元,拿走3斤牛肉,找零50元。所以牛肉贩损失3斤牛肉,现钞50元。
(1)损失牛肉成本:48*3=144元
(2)找给小黑的钱:200-50x3=50元
(3)牛肉贩共亏损:144+50=194元
由此可见,牛肉贩共亏损194元。
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