The duration and resource usage for each activity are showed in the table below.

Activity Predecessor Total Processing Time (days) # of painters required/day A --- 0.5 1 B --- 1 1 C A,B 1 1 D C 1 1

Assume the maximum number of painters is 1. Level the resources by following the rule "Delay the activity with the most positive slack first". How much slack time (in days) does activity B have after leveling resources?

\begin{tabular}{|c|c|c|c|} \hline Activity & Predecessor & \begin{tabular}{l} Total \\ Processing \\ Time \\ (days) \end{tabular} & \begin{tabular}{l} \# of painters \\ required/day \end{tabular} \\ \hline A & --- & 0.5 & 1 \\ \hline B & --- & 1 & 1 \\ \hline C & A,B & 1 & 1 \\ \hline D & C & 1 & 1 \\ \hline \end{tabular}