A boy has got the same number of sisters as brothers.But his sister has got half the number 未完接

问题描述:

A boy has got the same number of sisters as brothers.But his sister has got half the number 未完接
of sisters as brothers.The number of sisters in this family is __________,and the number of the brothers is _________.

three four
也就是说,这个家庭里有4个男孩儿,3个女孩儿.
所以说,其中一个男孩儿,有三个兄弟,三个姐妹,数量相等.
女孩儿则有四个兄弟,两个姐妹,姐妹的数目是兄弟的一半.