Answer:
[tex]\frac{2}{3}\ cups\ of\ flour[/tex]
Step-by-step explanation:
we know that
Vincent uses 2 cups of flour for every 12 muffin that he make
so
Using proportion
Find out what is the total number of cups of flour Vincent will use to make 4 muffins
Let
x -----> the total number of cups of flour
[tex]\frac{2}{12}\frac{cups\ of\ flour}{muffins}=\frac{x}{4}\frac{cups\ of\ flour}{muffins}\\\\x=2*4/12\\\\x=\frac{2}{3}\ cups\ of\ flour[/tex]