Q. 1. During the next four months, a construction industry must complete three projects. Project 1 must be completed within three months also needs 8 months of labour. Project 2 must be completed within four months also needs 10 months of labour. Project 3 must be completed at the end of two months also needs 12 months of labour. Each month, 8 employees are available. During a given month, no more than 6 employees can work on a single job. Formulate a maximum-flow problem which could be used to conclude whether all three projects can be completed on time. Draw the network also Write down the LP.