Question

But it takes no longer to prrepare well for one interview than to wander in half-prepared for five

分析句子成分，语法，翻译。

Answer 1

this is chinglish. the sentence itself is poorly constructed. the idea does not come across at all to your reader. people have to guess after translating it into Chinese. the idea still not sure even than.
这是中式英语。句子本身的构造拙劣。读者笔者的想法让读者非常困难猜测。读者要它翻译成中文后再猜测。仍不能确定意思。
Time is better spent to prepare well on one interview than five ill prepared ones.
It does not take more time to prepare well for one interview than half hearted attempt for five.

Answer 2

It takes 时间段 to do something.和 no more ... than..句型的结合。“为一个面试准备好比为五个面试做一些准备不会花费的时间长。”