Solve
-Erika Spent $\frac{3}{4}$ Hr on Her Computer Visiting the History Channel and the History

Multiple Choice

Solve.
-Erika spent $\frac{3}{4}$ hr on her computer visiting the history channel and the discovery channel websites. She spent $\frac{1}{4} \mathrm{hr}$ at the history channel website. How many hours did she spend at the discovery channel website?

A) $\frac{7}{16} \mathrm{hr}$
B) $\frac{1}{2} \mathrm{hr}$
C) $\frac{11}{16} \mathrm{hr}$
D) $\frac{1}{8} \mathrm{hr}$