Answer:
No , they don't have enough flour for both recipes..
Explanation:
Because Eliza: have 2 1/3
Jamie have 3/4---> so total for both are 2 1/3+ 3/4 = 7/3 + 3/4=28/12+9/12=37/12 < 4 cups of flour that both have....so they don't have enough flour for both recipes.