Percentage of final exam

most of the group thinks the final exam should be 10% of our grade. Lamar said it should be 10% because he does not want it to really affect his grade. Henry thinks that the final exam should be 30% because he wants to higher his grade in history. Jamar said he wants the final exam to be worth 20% because he wants to keep his grade the same if he does not d that good but if he does do good it will create a greater overall grade. Lastly Jason thinks the final exam should be worth 10% also because he does not want this final exam to affect his grade.