Adjusting Recipes and Proportions

This video tutorial explains how to use proportions to scale quantities up or down. It covers examples such as calculating the cost of juice bottles, determining payment for catwalking, and adjusting recipe ingredients for different quantities. The key idea is to find the unit cost or quantity and then scale it to the desired amount. The video concludes with a recap and encourages viewers to like and subscribe.

What is the first step in solving a proportion problem involving costs?

• Subtract the cost of one item from the total.

• Multiply the total cost by the number of items.

• Calculate the total cost of all items.

• Find the cost of a single item.

If 7 bottles cost £4.20, how much does one bottle cost?

• £0.60

• £0.50

• £0.70

• £0.80

How do you find the cost of three bottles if one bottle costs £0.60?

• Subtract £0.60 from the total cost.

• Divide £0.60 by 3.

• Multiply £0.60 by 3.

• Add £0.60 three times.

What is the cost of three bottles if one bottle costs £0.60?

• £1.20

• £1.80

• £1.50

• £2.00

How much does Julia earn per cat if she earns £45 for 18 cats?

• £2.50

• £2.00

• £3.00

• £3.50

What is Julia's total earning for walking 34 cats?

• £75

• £105

• £95

• £85

What is a common type of question in proportion problems related to recipes?

• Calculating the total cost of ingredients.

• Adjusting ingredient quantities for a different number of servings.

• Finding the cost of a single ingredient.

• Determining the cooking time for a recipe.

If a recipe for 12 cakes requires 180 grams of sugar, how much sugar is needed for one cake?

• 10 grams

• 15 grams

• 18 grams

• 12 grams

How much sugar is needed for 18 cakes if one cake requires 15 grams?

• 270 grams

• 310 grams

• 250 grams

• 290 grams

What is the first step in adjusting a recipe for a different number of servings?

• Calculate the total ingredient cost.

• Multiply the total amount by the number of servings.

• Find the amount needed for one serving.

• Divide the total amount by the number of servings.