Moderate -0.5 This is a straightforward critical path analysis question requiring students to recognize that if ABC is on the critical path, then early and late times must be equal at each node, leading to a simple equation to solve for d. It tests basic understanding of critical path concepts but requires minimal calculation and no complex problem-solving.
2 Part of an activity network is shown in the diagram below.
\(A B C\) is part of the critical path of the activity network.
\includegraphics[max width=\textwidth, alt={}, center]{dcf97b92-d067-41d4-89a6-ea5bab9ea4ff-04_264_908_447_566}
The duration of activity \(B\) is \(d\).
Which of the following statements about \(d\) is correct?
Circle your answer.
$$0 < d < 10 \quad d = 10 \quad 10 < d < 20 \quad d = 20$$
2 Part of an activity network is shown in the diagram below.\\
$A B C$ is part of the critical path of the activity network.\\
\includegraphics[max width=\textwidth, alt={}, center]{dcf97b92-d067-41d4-89a6-ea5bab9ea4ff-04_264_908_447_566}
The duration of activity $B$ is $d$.\\
Which of the following statements about $d$ is correct?
Circle your answer.
$$0 < d < 10 \quad d = 10 \quad 10 < d < 20 \quad d = 20$$
\hfill \mbox{\textit{AQA Further AS Paper 2 Discrete 2019 Q2 [1]}}