GCSE Maths - Scaling Up and Down Using Proportions #87

The video tutorial explains how to use proportions to scale quantities up or down. It covers examples such as calculating the cost of a different number of juice bottles, determining earnings for a catwalker based on the number of cats walked, and adjusting recipe ingredients for a different number of cakes. The key idea is to first find the unit cost or quantity and then scale it to the desired amount.

If Elsa wants to bake 18 small cakes, how do you calculate the amount of sugar needed based on a recipe for 12 cakes?

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What is the method to find out how much of an ingredient is needed for a different number of cakes in a recipe?

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