Two high-tech companies, A and B, are preparing to recruit talents for the society. The conditions of the two companies are basically the same, only the salary.

If Company A is selected, the details are as follows:

Year 1 year, year 2 and year 3 -N

44000+6004000+ 12004000+(n- 1)* 600

If you choose Company B, the details are as follows:

The first half of the first year

24,000 +300

The first half of the second year

20,000+6,004,000+9,000

The first half of the third year

20,000+ 120040,000 + 1500

-

The first half of year n

2+(2n-2)*300 4+(2n- 1)*300

(2)B-A = 4+(2n- 1)* 300-4+(n- 1)* 600 = 300。

So choose Company B, and the price difference between Company A and Company B is 300 yuan every year.