数学题:三只猴子吃篮子里的桃子
- 时间:2020-05-13 15:05:48
- 分类:数学世界
- 阅读:143 次
数学题:三只猴子吃篮子里的桃子,第一只猴子吃了1/3,第二只猴子吃了剩下的1/3,第三只猴子吃了第二只猴子吃过后剩下的1/4,最后篮子里还剩下6个桃子。篮子里原来有桃子多少个?
数学题解答:先弄清每只猴子吃了篮子里所有桃子的几分之几。
第一只:1/3
第二只:(1 - 1/3)× 1/3=2/9
第三只:(1 - 1/3 - 2/9)× 1/4 = 1/9
剩下的6个桃子占总数的几分之几:1 - 1/3 - 2/9 - 1/9 =1/3
桃子的总数:6 ÷ 1/3 =18(个)
答:篮子里原来有桃子18个。
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