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compound interest increases interest more than simple interest
With compound interest, after the first period you interest is calculated, not only on the original amount but also on the amount of interest from earlier periods. As to "better" or not, the answer depends on whether you are earning it on savings or paying it on borrowing!
With compound interest, in the second and subsequent periods, you are earning interest on the interest earned in previous periods. If you withdraw the interest earned at the end of every period, the two schemes will earn the same amount.
Simple interest is the interest you earn on your principal, IE the amount of your original investment. For example, you put 1000 dollars in a saving account paying 3% per annum. At the end of the year you will have earned 30 dollars on that one thousand dollars. If you leave the principal and interest in the account for another year you will earn another 30.00 on your original 1000 dollars plus .90 interest. on the first 30.00 dollars interest. This gives you a total of 1060.90 in your second year. In each succeeding year you will earn interest on your interest plus interest on your original principal which, if left alone will add up to a substantial some given the power of compound interest. One caveat, compound interest is a double edged sword. If you have a loan and fail to make your monthly payments on time, compound interest will gut you financially.
Draw a flow chart to calculate simple interest with 10% rate if time is greater than 2 yrs otherwise calculate simple interest with 5%.