Question: A recipe requires 4 cups of flour to make 8 cookies. How many cups of flour are needed to make 20 cookies?
Options:
8 cups
10 cups
12 cups
15 cups
Correct Answer: 10 cups
Solution:
4 cups for 8 cookies means 1 cup for 2 cookies. For 20 cookies, 20/2 = 10 cups.
A recipe requires 4 cups of flour to make 8 cookies. How many cups of flour are
Practice Questions
Q1
A recipe requires 4 cups of flour to make 8 cookies. How many cups of flour are needed to make 20 cookies?
8 cups
10 cups
12 cups
15 cups
Questions & Step-by-Step Solutions
A recipe requires 4 cups of flour to make 8 cookies. How many cups of flour are needed to make 20 cookies?
Step 1: Understand that the recipe uses 4 cups of flour to make 8 cookies.
Step 2: Find out how much flour is needed for 1 cookie. Divide 4 cups by 8 cookies: 4 cups ÷ 8 cookies = 0.5 cups per cookie.
Step 3: Now, we need to find out how much flour is needed for 20 cookies. Multiply the amount of flour for 1 cookie by 20: 0.5 cups × 20 cookies = 10 cups.
Step 4: Therefore, you need 10 cups of flour to make 20 cookies.
Proportions – Understanding the relationship between quantities in a recipe and scaling them up or down.
Unit Rate – Calculating the amount of an ingredient needed per unit of output (cookies in this case).
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