Answer:
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Step-by-step explanation: your welcome
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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%
% change = (new value - old value)/(old value) * 100%
.. = (9.67 -9.74)/9.74 * 100%
.. = -0.07/9.74 * 100%
.. = -0.7%
The decrease is 0.7%.
