Compound Interest Calculations
This page focuses on solving compound interest GCSE questions and answers using different methods. It demonstrates how to calculate compound interest for various time periods and interest rates.
The first example shows how to calculate compound interest for £6000 invested at 2.4% per annum over 3 years. It presents two methods:
- Year-by-year calculation
- Using the compound interest formula
Example: Tim invests £6000 at 2.4% compound interest per annum. After 3 years, the account balance is £6442.45.
The page also includes a problem involving £9000 invested at 2.1% compound interest for 5 years, solved using the formula method.
Formula: Compound Interest Formula: A = P1+r^n, where A is the final amount, P is the principal, r is the interest rate asadecimal, and n is the number of years.
These examples help students understand how to apply the compound interest formula GCSE Edexcel and other exam boards require.