If the net fund value is 1 yuan when you buy it, then the net fund value is 20,000 yuan when you buy 20,000 yuan.

If the net value now rises to 1.05 yuan, it means that the net value rises by 5%.

Then your 20,000 yuan should now be X 105% = 2 1 10,000 yuan. The total income is more than 1000 yuan.

If your net worth has risen to 1.05 yuan when you bought it, what is your net worth now? Calculate in the same way.