Question

respond to each of the following.
a. a cookie recipe uses 3 cups of flour to make 15 cookies. how many cookies can you make with this recipe with 4 cups of flour? (assume you have enough of the other ingredients.) \boxed{} cookies
b. a teacher uses 36 centimeters of tape to hang up 9 student projects. at that rate, how much tape would the teacher need to hang up 10 student projects? \boxed{} cm
(lesson 4 - 3)

Explanation:

Part a

Step1: Find cookies per cup

First, find how many cookies are made per cup of flour. Using the given ratio: \( \frac{15 \text{ cookies}}{3 \text{ cups}} = 5 \text{ cookies per cup} \)

Step2: Calculate for 4 cups

Multiply the cookies per cup by 4 cups: \( 5 \times 4 = 20 \)

Step1: Find tape per project

First, find how much tape is used per project. Using the given ratio: \( \frac{36 \text{ cm}}{9 \text{ projects}} = 4 \text{ cm per project} \)

Step2: Calculate for 10 projects

Multiply the tape per project by 10 projects: \( 4 \times 10 = 40 \)

Answer:

20

Part b