Kekerovic Contractors specialises in the planning and construction of houses in Nimes, southern France. The operations director, Bronco Kekerovic, has recently taken on a project to build a four-bedroom home with an outdoor pool. The project's tasks, duration, and sequence are outlined below.

A - Lay foundation to the house: 1 week.

B- Construction of house: 6 weeks. B is preceded by A.

C - Excavation, and foundation for swimming pool: 2 weeks.

C is preceded by A.

D - Tiling and sealing of pool: 2 weeks. Dis preceded by C.

E - Internal decor and fixtures for the house: 3 weeks. E is preceded by B.  

F- Final testing and handing over keys to the new owner: 1 week. F is preceded by activities D and E.

(a} Construct a Gantt chart for Kekerovic Contractors using the above information and identify the quickest time in which the project can be completed. [5 marks}

(b) Explain why the use of Gantt charts can be important for businesses such as Kekerovic Contractors.