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以下是北师大版小学数学第十册《购物策略》(81页)的主题图。某种新品牌的饮料大瓶装(1200ml)售价10元,小瓶装(200ml)售价2元。三家商店为了促销这种饮料,分别推出了优惠策略。
The following is the theme of Beijing Normal University Edition 10 math book “shopping strategy” (81 pages). A new brand of beverage bottled (1200ml) priced at 10 yuan, small bottles (200ml) price of 2 yuan. Three stores in order to promote this beverage, introduced a preferential strategy.