+38 A friend has a 78% average before the final exam for a course. That score includes everything but the final, which counts for 20% of the course grade.
+38 A friend has a 78% average before the final exam for a course. That score includes everything but the final, which counts for 20% of the course grade.
What is the best course grade your friend can earn? ? %
What is the minimum score your friend would need on the final to earn a 75% for the course? ? %
+37146 78% represents 80% of the final course grade
the final exam represents 20% the max score on the exam would be 100
78 (.80) + 100 (.20) = best final course grade
78(.80) + x (.20) = 75 solve for 'x' to find score needed on exam to get 75 for the course
