From the course: Learning Everyday Math
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Scaling a recipe
- In this movie I'm gonna explain how to scale a recipe or change the amounts of a recipe to serve either more people or fewer people. So let's say you are making cookies and the example I wanna use is, you're gonna make cookies for the House of Representatives in Washington, D.C. So let's say your recipe will make 30 cookies but you realize that there's 435 members of the House. So you need to scale it up to make 435 cookies. So what do you do? So let's look at the recipe. Let's say the recipe for the 30 cookies says that we need 2 cups of flour to make 30 cookies and let's say that it also says that we need to make... Use 1.5 cups of sugar to make 30 cookies. Okay, so now let's think about, can we make a ratio and a proportion, that's really how we expand recipes. So we see we have a couple of different relationships. We have the relationship, for every two cups of flour we can make 30 cookies. So we can write that as 2 over 30. We can also write the relationship of sugar to how…
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