Is this problem scrubby?

Ryan thinks that a lot of the problems I write are "scrubby." I, however, know for a fact that only $\frac{1}{4}$ of my problems are "scrubby." Given that Ryan thinks a problem is "scrubby" when it is not $\frac{3}{5}$ of the time, then the probability that Ryan will think a given problem is "scrubby" can be represented by $\frac{A}{B}\text{,}$ where $A$ and $B$ are positive coprime integers. What is $A+B\text{?}$ $\text{.........................................................................}$

Ryan, please do not dispute $\frac{1}{1}\Rightarrow\boxed{2}$ as the solution.