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Lesson 3: Equivalent ratios

# Equivalent ratios: recipe

Adjusting a cake recipe for different guest numbers involves understanding ratios. Halving ingredients for a smaller cake maintains the same ratio, like eggs to flour (4:3). Ratios ensure consistent taste and quality, regardless of cake size.

## Want to join the conversation?

• What if you have a number of guests like 20 guests coming over for your dinner party?
• You would, find 32 divided by 20 (which equals 1.6) and you would divide all the ingredients by 1.6
• Thank you so much Sal! I learnt alot about ratios, I just have 1 question, can you teach us how to make them equal like if there were, lik, 19 people coming over?
• If you have 32 as the starting point, 1/2 and 1/4 are very natural ratios, but if you have 19 people, this a very awkward ratio of 19/32, so multiplying 19/32*8 = 4.75 makes it difficult to make a super cake with 3/4 of an egg. Or 10/32*6 = 3.5635 cups of flour. So if you have 19 guests, most people would tend to make the super cake that serves 32 and just expect to have leftovers.
Or they may say well what if I want to use 6 eggs which is 6/8 or 3/4 of each of the ingredients (3/4*32 = 24 people). 6*3/4 = 4 1/2 cups of flour and sugar or 2*3/4 = 6/4 or 1 1/2 cups of butter, etc.
• when will we use ratios in real life, other than baking?
• like comparing prices per ounce while grocery shopping, calculating the proper amounts for ingredients in recipes and determining how long car trip might take.
• I MADE THE SUPER CAKE! I quartered it and added extra water, cut down the sugar, switched baking soda for baking powder (And cut that down as well), and added salt and vanilla. It was dense but moist, and sweet. Total recipe of 2 eggs, 1.5 cups of flour, 1 cup of sugar, 1 stick of butter, 1 teaspoon of baking powder, one teaspoon of salt, 1.5 cups of water, and a splash of vanilla in the oven at 350 for 25 minutes.
• Can you actually make a cake without frosting that's the best part dude
• You would, find 32 divided by 20 (which equals 1.6) and you would divide all the ingredients by 1.6
• Does ratios work by what comes first like: 7 beach balls and 4 sand buckets, so would that mean the ratio is 7:4?