Given the following project to landscape a new building site.
Activity    Immediate Predecessor    Activity duration(days)    Resources used
A: Get Plants    -    2    X,Y
B: Get flowers    A    2    X
C: Obtain soil    A 3    X
D: Obtain Fertilizer    B,C    4    X,Y
E: Select Labor    D    3    W,X
F: Set date D    1    W,X,Y
G: BEGIN    E,F    2    X,Y
Problem 1: Find the critical path and project duration in days.
Problem 2: Given that each resource is assigned 100% to each task, identify the resource constraints.
Problem 3: Level the resources and determine the new project duration and critical path
Problem 4: Identify what alternative solutions can be used to shorten the project duration and not over-allocate the resources.