A cookie recipe calls for 5/7 cup of butter to make 4 dozen cookies. Anna need to make 10 dozen cookies for a bake sale. How many cups of butter are required?

25/14 cup of butter are required to make 10 dozen cookies.

Step-by-step explanation:

Cup of butter required to make 4 dozen cookies = 5/7

To find 1 dozen cookies :

Rate = Cup of butter required / number of dozen

Let, the cup of butter for 1 dozen be'x'.

⇒ (5/7) / 4 = x/1

⇒ x = 5/28

The cup of butter required for 10 dozen of cookies :

⇒ 10 (cup of butter for 1 dozen cookies)

⇒ 10 5/28

⇒ 50/28

⇒ 25/14

Therefore, 25/14 cup of butter are required to make 10 dozen cookies.