The construction manager above realizes that the current costs of the project are sunk costs, but now wishes to speed up the progress of the project and finish the project by week 30 with the least additional cost. As the work is highly labor intensive, he is willing to hire more workers on the following activities to speed them up. The additional wages required to fully speed up each of the activities are expressed below. The manager will be paying the workers on an hourly basis, so he can reduce the duration of these activities fully or partially