Computer Complex, Inc. has two main services: $(1)$ time on a timeshared computer system, and $(2)$ proprietary computer programs. Computer time is provided by the operation department $($Op$)$ and programs are written by the programming department $($P$).$ The percentage of each service used by each department for a typical period is:

$\backslash$table$[[Use{r}_{?},$Supplied,$],[$Op$,30\%,40\%$