EBC is a construction company. They are in the process of constructing a building whose plumbing would be installed in 12 days at a cost of $ 64 or in 10 days at a cost of $ 80 by working overtime. Plumbing is on the critical path and each days saving in completion time of the whole project is worth $ 10.

a) You have been asked to advise the project team on whether to take the 10 day or the 12-day option. Using relevant computation, present your piece of advice.

b) Highlight the elements of trade-off expressed in the above case.

c) Assume each days saving in completion time is worth $ 5. What advice would you give? Give reasons for your answer