Develop a line of balance schedule for a 20-housing unit project considering that each unit has the activities shown in the Table below, the hand-over rate is 3units per week and the contractor is planning to work 40 hours per week and use 5 days buffer between activities

Activity	Man-Hours per Activity	Man per actvity
A Substructure	110	3
B Superstructure	320	8
C Joinery	365	9
D Pluming	35	2
E finishes	210	5