we are given that Lydia studied 3/4 of an hour and then 1/4 of an hour. To determine the total number of time that he spent studying we need to add both decimals, like this:
[tex]n=\frac{3}{4}+\frac{1}{4}[/tex]Where "n" is the total time.
Adding both decimals together:
[tex]n=\frac{3+1}{4}=\frac{4}{4}=1[/tex]Therefore, Lydia spent 1 hour.
