• A housing project consists of activities as listed in the table. Compute the cement requirement based on early start and late start times. Also prepare a graph for cumulative cement requirement. What is the minimum and maximum requirements of cement up to the 8^th week:

Activity	Duration in Weeks	Total Cement Required in Tons per activity
1-2	4	20
2-3	4	24
2-4	6	18
2-5	2	10
3-6	2	20
4-6	8	24
5-6	4	20
5-7	6	30
6-7	8	40

• Level the resources
• Allocate the resources if there is a constraint of 10 T of cement available per week and also find the duration of the project?