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

The video tutorial explains how to use a scale model to determine the real-life size of an object. It begins by defining the scale as 1:200, meaning one unit on the model equals 200 units in reality. The tutorial then demonstrates how to calculate the real length of a plane from a model measurement of 17 centimeters, resulting in 3400 centimeters or 34 meters. The process includes converting centimeters to meters and concludes with the final answer and marking criteria.

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