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how to calculate simple interest in weeks. Simple interest is calculated only on the initial amount principal that you invested. R R100 R Rate of Interest per year as a percent.
Multiply the daily interest by the number of days. The Simple Interest Calculation Formula is. Using it you multiply the period annual interest rate and term to find the amount of interest.
Calculating simple interest or the amount of principal the rate or the time of a loan can seem confusing but its really not that hard.
To begin your calculation enter your starting amount along with the annual interest rate and the start date assuming it isnt today. The formula for calculating simple interest is I PRT. Here are examples of how to use the simple interest formula to find one value as long as you know the others. Convert the annual rate to a daily rate.