GCSE Secondary Maths Age 13-17 - Ratio, Proportion & Rates of Change: Compound Growth and Decay - Explained

The video tutorial explains how to calculate compound interest over two years. In the first year, the interest rate is X percent, and the investment grows from £12,000 to £12,336. The interest rate for the second year is X/2 percent. The tutorial demonstrates how to calculate the interest for each year, find the percentage rate, and use a percentage multiplier for quick calculations. It also discusses the allocation of marks for each step in the problem-solving process.

What was the initial investment amount at the start of the first year?

How much interest did Gene earn in the first year?

What percentage was the interest rate for the first year?

What was the interest rate for the second year?

What was the final amount Gene had at the end of the two years?