Define interest rate.

• A. The amount of tax paid on a loan
• B. The price of a loan in terms of time
• C. The percentage charged on a loan or paid on an investment
• D. The amount of money added to savings annually

Answer: (C)

Interest rate is defined as the percentage charged on a loan or paid on an investment. It reflects the cost of borrowing money or the return on investment for deposited funds. This percentage is expressed as an annual rate and serves as a key indicator of the financial health of the economy, influencing both consumers and businesses in their borrowing and spending decisions.

When you take out a loan, the interest rate is the cost you incur for borrowing that money; it is expressed as a percentage of the principal amount and typically charged on a yearly basis. Similarly, for investments, the interest rate represents the earnings you make on your savings or investments, allowing you to measure the growth of your funds over time.

This definition emphasizes the relationship between the amount of money borrowed or invested and the cost or return associated with it, which is why it is the most accurate representation among the choices provided.