Draw the lines of balance for the activity A in a repetitive construction project consisting from $120$ units and has been planned toa rate of $6$ units per week. Activity A has $200$ man.hr and needs $3$ Clslabors in each unit. There will be $40$ working hours and $5$ working days in a week.wQ$3$ : Give answers for the following questions with brief description:$($a$)$ What is the duration of a dummy activity $?($b$)$ What the probablity of completing projet on ime i CPM is used $25408$L$0($c$)$ What are the functions of managers $?2$oo$($d$)$ Give $5$ resources included in any construction project?Ca$2$up$.$des del$($e$)$ What is the magnitude of work in man.hr for $200$ m$\text{'}$ painting if the productivity is $2$ m$\text{'}$ per hour $?$