Answer:
[tex]\frac{1}{6}[/tex]
Step-by-step explanation:
First, we have to find how much water Monica needs in total:
[tex]2\frac{3}{4} + 3\frac{1}{8} = 5\frac{7}{8}[/tex]
We have given that she needs [tex]6\frac{1}{24}[/tex] amount of floor for the dessert and we have to find the difference between the amount of water and floor.
[tex]6\frac{1}{24} - 5\frac{7}{8} = 1\frac{1 - 21}{24} = \frac{25 - 21}{24} = \frac{4}{24} = \frac{1}{6}[/tex]