1. An investor wants to borrow 100000 yuan from the bank, with a term of two years and an annual profit of 10%. If the repayment method of this loan is quarterly interest payment, what is the total interest that investors pay for this loan every time until the principal is repaid? If the time value of advance payment is calculated, what is the interest actually paid by investors after the loan expires?

Every interest paid by investors = 2000 *10%/4 = 500,000 yuan,

Total interest for two years = 50 * 8 = 4 million yuan.

If the time value paid in advance is calculated, the interest actually paid by investors after the loan expires is equivalent to the interest rate of each period 10%/4=2.5%, and the interest is:

50 * (1+2.5%) 8-1)/2.5% = 436.81ten thousand yuan.

2. During the holding period of 15, the annual net operating income of office projects was 700,000 yuan, and the net resale income at the end of15 was100,000 yuan. If the discount rate is 10%, find the present value of the income of office investment projects.

The present value of income of the investment project of this office building is:

70 * ( 1-( 1+ 10%) (- 15))/ 10%+ 1000/( 1+ 10

3. It is known that the annual interest rate of this loan is 65,438+02%. If the borrower and the borrower agree to calculate the interest on an annual, quarterly and monthly basis, what is the actual interest rate of this loan?

The effective interest rate for half a year = (1+12%/2) 2-1=12.36%.

The actual interest rate for quarterly interest calculation = (1+12%/4) 4-1=12.55%.

The actual monthly interest rate = (1+12%12)12-1=12.68%.