[tex]\begin{gathered} 3\frac{3}{4\text{ }}\text{ cups of flour is needed for each batch } \\ 1\text{ batch = 3}\frac{3}{4}\text{ cups of flour } \\ 3\text{ batches =?} \\ \text{cross multiply} \\ \text{cups of flour for 3 batches = 3}\frac{3}{4}\times3=\frac{15}{4}\times3=\frac{45}{4}=11\frac{1}{4} \end{gathered}[/tex]