“牛吃草”问题来源于世界著名的物理学家、数学家牛顿所著的《普通算术》一书中的一道题目. 该题为:“一个牧场,12头牛4周吃草31/3格尔,21头牛9周吃草10格尔,问24格尔牧草多少头牛18周吃完?”(注:格尔指牧草的面积) 本题涉及的数量有牛(头),时间(周),食 The problem of “grazing cows” came from a topic in the book “Ordinary Arithmetic” written by the world-famous physicist and mathematician Newton. The title was: “A pasture, 12 cows, 4 weeks grazing, 31/3 Geer, 21 cows grazing 10 Geer in 9 weeks, and asked how many head cattle of 24 Gerl’s were eaten in 18 weeks?” (Note: Gere refers to the area of ​​pasture) The number of cattle involved in this issue is head (head), time ( Week), food