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Deducing a Formula for Compound Interest Video Lecture - Class 8

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FAQs on Deducing a Formula for Compound Interest Video Lecture - Class 8

1. What is compound interest?
Ans. Compound interest is the interest calculated on both the initial principal amount and the accumulated interest from previous periods. In simple terms, it means that you earn interest not only on the initial investment but also on the interest that has been added to the principal over time.
2. How is compound interest different from simple interest?
Ans. Compound interest differs from simple interest in the way it is calculated. Simple interest is calculated only on the initial principal amount, while compound interest takes into account the accumulated interest as well. This means that compound interest grows at a faster rate compared to simple interest.
3. What is the formula for compound interest?
Ans. The formula for compound interest is given by: A = P(1 + r/n)^(nt) where: A is the future value of the investment/loan, including interest P is the principal amount (initial investment/loan) r is the annual interest rate (expressed as a decimal) n is the number of times interest is compounded per year t is the number of years the money is invested/borrowed for
4. How can compound interest be applied in real-life situations?
Ans. Compound interest is commonly applied in various real-life situations. For example, it is used in banking for calculating interest on savings accounts, loans, and mortgages. It is also relevant in investments, such as fixed deposits, mutual funds, and retirement accounts. Understanding compound interest helps individuals make informed financial decisions and maximize their returns.
5. Can compound interest work against you?
Ans. Yes, compound interest can work against you if you have taken a loan or accumulated debt. When you borrow money, the interest accumulates and is added to the principal amount, leading to an increase in the total amount owed. Over time, the compounding effect can make the debt grow exponentially, making it harder to repay. It is essential to carefully manage loans and debts to avoid the negative impact of compound interest.
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