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?

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How much interest did Gene earn in the first year?

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What percentage was the interest rate for the first year?

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What was the interest rate for the second year?

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

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