Question

A recipe calls for 4 dozen cookies to contain 8 cups of flour. How much flour is

needed for 6 dozen cookies?

Answer 1

What is a ratio?

A ratio has two or more numbers that symbolize relation to each other. Ratios are used to compare numbers, and you can compare them using division.

The ratio we can use to express this problem is:

Number of dozens: flour

• 4: 8

To figure out the amount of flour needed for 6 dozen cookies, we can use this equation:

• 8 × 1.5 = 12

Why do we multiply by 1.5?

We multiply by 1.5 because to go from 6 to 8 we multiply 6 by 1.5.

Therefore, you will need 12 cups of flour for every 6 dozen cookies.