How to calculate calf online interest? Investment 1000 yuan, interest rate 15%, term 10 days, how much interest can you get?

Solution: p- principal, also known as initial amount or present value;

I- interest rate refers to the ratio of interest to principal;

I- interest;

F- the sum of principal and interest, also known as the sum or final value of principal and interest;

N-the number of interest periods.

Interest rate (I) usually gives the annual interest rate and monthly interest rate, and the daily interest rate should be converted.

Monthly interest rate = annual interest rate/12 (month)

Daily interest rate = annual interest rate /360 (days) = monthly interest rate /30 (days)

Interest = principal * interest rate * number of interest-bearing periods

I = P * i * n

Known: P = 1000 (yuan) i = 15%/360 n = 10 (days).

Find the value of: I

I =1000 *15%/360 *10 = 4.1666667 ≈ 4.17 (yuan)

Answer: You can earn interest. 4. 17 yuan.