Problem: Two critical path activities are candidates for crashing on a CPM network. Activity details are in the table below.
Activity: One
Normal Time: 8 days
Normal Cost: $6,000
Crash Time: 6 days
Crash Cost $6,800
Activity: Two
Normal Time: 10 days
Normal Cost: $4,000
Crash Time: 9 days
Crash Cost: $5,000
To cut one day from the project's duration, activity _____ should be crashed first, adding_______ to projects cost.