Profit and loss problem (answer in the simplest way)

Profit and loss problem emphasized the balance between the two sides.

First of all, let's look at the part where Xiao Fang did more questions than Xiao Xue, that is, the 10 questions he read more in the first two weeks, and the five questions he read more every week in the following weeks.

But in fact, the topics that two people do are the same, so the part that Xiaofang has more than Xiaoxue will eventually be made up by Xiaoxue, that is, Xiaofang has read less than Xiaoxue in the last two weeks, and Xiaoxue has read 50 topics.

So we can see that, except for the first two weeks, Xiao Fang read (50- 10)/5=8, that is, the number of questions read by Xiao Fang is 35*2+30*8=3 10.

The number of topics looked at by Xiaoxue is 30*2+25*(8+2)=3 10.

I hope it helps you.