Question

这是关于年龄的问题。我不知道如何解决这个问题。请帮我。问题是

> A man is 5 times as old as his son. 2 years ago the sum of squares of
> their ages was 11, 14. find the present age of son?

Answer 1

不是一个编程问题..但是，嘿，我认为每个程序员都需要一些数学技能。

因为这看起来像是一个家庭作业问题。让我给你一些指示。

A man is 5 times as old as his son

儿子的年龄= x，男人的年龄= 5x

2 years ago the sum of squares of their ages was 1114 (I think)

（x-2）² +（5x-2）² = 1114

解决x !!