小明原来买一种品牌的牙膏,牙膏圆形出口的直径是5毫米,能用72次,他每次挤出牙膏 发布时间:2017-05-06 19:05 │ 来源:www.tikuol.com 题型:解答题 问题: 小明原来买一种品牌的牙膏,牙膏圆形出口的直径是5毫米,能用72次,他每次挤出牙膏长约1厘米.这种品牌的新款牙膏把圆形出口的直径改为6毫米,小明每次还挤出牙膏长约1厘米.这枝新牙膏大约能用多少次?
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