An enterprise borrows 200,000 yuan from a bank on the condition that the annual interest rate is 12% and the interest is paid once a month, so as to seek the principal and interest to be returned in the third year. 1. An enterprise borrows 200,000 yuan from a bank. Assuming the annual interest rate is 12%, the interest is calculated once a month, and the principal and interest to be returned in the third year are sought.

The effective interest rate = (1r/m) ∧ m-1=12.68.

I= 12%, with interest once a month and once a year 12, so m= 12 can be regarded as a loan with interest once a month of 200,000. After 36 months, the real interest rate for one month is 12%/ 12, so

2. Company A borrows 68 million yuan from the bank, and pays 84,200 yuan in interest after the expiration of one year. ...

If Party A has a loan of X million yuan and Party B has a loan of 68-x-X million yuan, then

x 12%(68-x) 13%=8.4

12x 68 13- 13x = 840

X = 440,000 yuan

So there are 440,000 loans for A and 240,000 loans for B..

3. Company A borrows100000 yuan from the bank, with an annual interest rate of 6% and a term of 5 years, and calculates the annual interest rate and compound interest. How much interest should I pay to the bank after maturity? ________

C