Simple Interest Formulas and Calculations. R and t are in the same units of time. This amount is larger than the principal amount for the first month 9955.
When the amount of interest the principal and the time period are known you can use the derived formula from the simple interest formula to determine the rate as follows.
Principal Repayment in the 18 th month. This amount is larger than the principal amount for the first month 9955. The simple Interest for 2 years is Rs. A P 1 r22n.