The Foundation makes a fixed investment, and 200 yuan every month. What are the incomes after 20 years and 30 years respectively? The annual income is based on the average annual income of the current fixed investment fund. The average annual income is really difficult to determine because it changes according to market trends. It is impossible for a so-called average to reflect too many problems, so this figure is really difficult to work out for you.

In terms of calculation, the calculation formula of the fund's fixed investment income is:

m=a( 1+x)[- 1+( 1+x)^n]/x

M: Expected income.

Answer: the amount of fixed investment in each period (the unit is the same as the rate of return, and if it is the annual rate of return, it is the total amount of fixed investment).

X: the first yield

N: fixed investment period (n power in the formula)

We set a monthly fixed investment in 200 yuan, with an annual income of 12% and a fixed investment of 20 to 30 years.

M20 ≈ 265438+600000

M30 about 648000