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

The video tutorial explains how to solve a problem involving the cost of materials for two watch faces, A and B. Both watch faces are circular with a radius of two centimeters. Watch face A is made entirely of plastic, while watch face B has a 20-degree metal sector and a 340-degree plastic sector. The cost ratio of metal to plastic is 3:2. The tutorial guides students through calculating the areas of the watch faces, determining the costs, and simplifying the ratio of costs. It concludes with advice on managing time during exams and focusing on easier questions first.

What is the final ratio of the cost of materials for A to B?

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What were the marks allocated for in the challenging question discussed?

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What advice does the teacher give regarding time management for challenging questions?

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