Answer:
Option D) 15 3/4 cups
Step-by-step explanation:
we know that
using proportion
Let
x ----> the cups of flour needed
[tex]4\frac{1}{2}=\frac{4*2+1}{2}=\frac{9}{2}\ cups\ flour[/tex]
[tex]\frac{(9/2)}{2}=\frac{x}{7} \\ \\x=(9/2)*7/2\\ \\x=63/4\ cups\ flour[/tex]
convert to mixed number
[tex]63/4\ cups=15.75=15\frac{3}{4}\ cups[/tex]
