Helping with Math
(Originally in English)
A primary school boy came home and asked his father,
"Father, this mathematics question is very difficult. Can you
help me, please?" The father came over and the son said,
"In this homework, the teacher said, "Suppose your father
earns only one thousand dollars per month, and your mother
spends about one thousand seven hundred dollars per month.
So, what is the answer?" The father said, "Oh, this you have
to go and ask your mother. She is the expert!"

帮忙做数学

有一个小学生回家问他父亲：‘爸爸，这一题数学好难，你可不可以教我？’爸爸走过来以后，小孩说老师的作业题目是：‘假设你爸爸每个月赚一千元，而你妈妈每个月花一千七百元，答案是什么？’父亲回答说：‘喔！这个要问你妈妈，她是专家！’