Answer: [tex]16\dfrac{1}{4}\text{ hours}[/tex]
Step-by-step explanation:
Given : The number of hours you did study on Monday = [tex]5\dfrac{1}{2}\text{ hours}[/tex]
The number of hours you did study on Wednesday = [tex]6\dfrac{1}{4}\text{ hours}[/tex]
The number of hours you did study on Friday = [tex]4\dfrac{1}{2}\text{ hours}[/tex]
Then the total hours you study is given by :-
[tex]5\dfrac{1}{2}+6\dfrac{1}{4}+4\dfrac{1}{2}\\\\=\dfrac{11}{2}+\dfrac{25}{4}+\dfrac{9}{2}\\\\=\dfrac{22+25+18}{4}\\\\=\dfrac{65}{4}=16\dfrac{1}{4}[/tex]
Hence, the total hours you study in last week = [tex]16\dfrac{1}{4}\text{ hours}[/tex]
