Answer
$\displaystyle 22\frac{1}{2}$ hours
Work Step by Step
We find out how many hours Mia studied in total by adding up her daily study hours:
$\displaystyle 5\frac{1}{2}+6\frac{1}{4}+3\frac{3}{4}+7$
$=\displaystyle 5\frac{2}{4}+6\frac{1}{4}+3\frac{3}{4}+7$
$=\displaystyle 21\frac{6}{4}$
$=\displaystyle 21\frac{3}{2}$
$=\displaystyle 22\frac{1}{2}$ hours
