Let's begin by listing out the given information:
Number of batches to be baked = 3 batches
Amount of flour used for each batch = 1 3/4 cups of flour = 7/4 cups of flour
To get the amount of flour required, we will multiply the number of batches to be baked by the amount of flour used for each batch
Amount = 3 * (7/4) = 21/4 = 5 1/4 cups of flour
[tex]\text{Amount = 3 }\cdot\text{ 1}\frac{3}{4}\text{ = 3 }\cdot\text{ }\frac{7}{4}\text{ = }\frac{21}{4}=\text{ 5}\frac{1}{4}[/tex]