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Digital SAT
Digital SAT Reading and Writing Section

Understanding Compound vs. Simple Interest

Easy Craft And Structure Analyzing Text Structure

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Excerpt:

In the world of finance, understanding the principles of compound interest is essential. Unlike simple interest, which is calculated only on the principal amount, compound interest is calculated on the principal and also on the interest earned over previous periods. This means that as time progresses, the amount of interest earned increases, creating a significant effect on long-term investments. For example, if you invest $1,000 at an annual interest rate of 5%, after one year, you will have earned $50 in interest, making your total investment $1,050. In the second year, you earn interest on $1,050, not just the original $1,000, leading to greater growth over time. Therefore, compound interest can dramatically increase wealth if given sufficient time.

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