Answer: 1%
Step-by-step explanation: Total 2,000
BioChem Lab: 25% of total = 25% . 2000 = 500
LabRep: 45% of Lab = 45% . 500 = 225
There will be 9 LabRep: 225/9 = 25
Participation: 10% of LabRep = 10% . 25 = 2.5
Actual LabRep: 90% of LabRep = 90% . 25 = 22.5
So, each lab report is worth 22.5 of 2000 = 2.5/2000 = 0.01125 = 1.125%
Nearest whole number = 1%