求一道英文的小学数学题

快乐的王一贴

实在想不出，求喵酱大神指导


When the children in Freezetown arrived for class yesterday, the teacher saw that 15 were
wearing beanies, 8 were wearing scarves and 12 were wearing gloves.
On closer inspection, he could see that all of the children wearing scarves were also wearing
gloves, and that half of the children with a scarf also had a beanie. There were 4 children
wearing a beanie who also had gloves but no scarf. There were 2 children with no beanie, no
scarf and no gloves.
How many children arrived for class yesterday?
A 18
B 19
C 20
D 21



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看星星的猫

自己顶起来，求指导

江湖小蝦

15 + 4 + 2 = 21 ？

嘉萤

厉害啊，求解题思路，不胜感激

胡杨部落

微信翻译如下：

昨天，当冰冻镇的孩子们来上课时，老师看到有15个孩子还在睡觉。
戴着无边便帽，8人戴着围巾，12人戴着手套。
仔细一看，他发现所有戴着围巾的孩子也都戴着
手套，那半个带围巾的孩子还带了一顶无檐小帽。有四个孩子
戴着无檐便帽，戴着手套，但没有围巾。有两个孩子没有帽子，没有
戴围巾没戴手套。
昨天来上课的孩子有多少？
一个18
B 19
C 20
D 21

李双余

请问当中的+4，不是很理解

轻于鸿毛

翻译水平不行

江湖小蝦

“and that half of the children with a scarf also had a beanie.”
也就是说另外那个half（8/2）没有在15个wearing beanies的人数里

再加上有两个孩子with no beanie，no scarf and no gloves

西阳行

（15-4-8/2）+12+2

加油罗乡长

8个人有：8围巾 8手套 4帽子
4个人有：4帽子 4手套
7个人只有帽子
2个人啥都没
一共21？