A construction project consists of twelve activities. The estimated duration (in days) required to complete each of the activities along with the corresponding network diagram is shown below.
$$\begin{array}{|c|c|c|c|c|c|} \hline {} & \text{Activity} & \text{Duration (days)} & {} & \text{Activity} & \text{Duration (days)} \\ \hline A & \text{Inauguration} & 1 & G & \text{Flooring} & 25 \\ \hline B & \text{Foundation work} & 7 & H & \text{Electrification} & 7 \\ \hline C & \text{Structural construction -1} & 30 & I & \text{Plumbing} & 7 \\ \hline D & \text{Structural construction -2} & 30 & J & \text{Wood work} & 7 \\ \hline E & \text{Brick masonry work} & 25 & K & \text{Coloring} & 3 \\ \hline F & \text{Plastering} & 7 & L & \text{Handling over function} & 1 \\ \hline \end{array}$$
Total floats (in days) for the activities $5-7$ and $11-12$ for the project are, respectively,
- $25$ and $1$
- $1$ nd $1$
- $0$ and $0$
- $81$ and $0$