Answer:
[tex]2\frac{11}{12}[/tex] cups of flour are nedeed
Step-by-step explanation:
we know that
3 dozen peanut butter cookies calls for 1 and 1/4 cups of flour
Convert mixed number to an improper fraction
[tex]1\frac{1}{4}\ cups=\frac{1*4+1}{4}=\frac{5}{4}\ cups[/tex]
using proportion
Find out how much flour would you need to make 7 dozen cookies
Let
x ----> the number of cups of flour
[tex]\frac{3}{(5/4)}\frac{dozen}{cups}=\frac{7}{x}\frac{dozen}{cups} \\ \\x=7*(5/4)/3\\ \\x=\frac{35}{12}\ cups[/tex]
Convert to mixed number
[tex]\frac{35}{12}\ cups=\frac{24}{12}+\frac{11}{12}=2\frac{11}{12}\ cups[/tex]
