SOLUTION: a student's grade in a course is determined by 4 quizzes and 1 exam. If the exam counts twice as much as each of the quizzes, what fraction of the final grade is determined by the
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Question 588187: a student's grade in a course is determined by 4 quizzes and 1 exam. If the exam counts twice as much as each of the quizzes, what fraction of the final grade is determined by the exam
Answer by KMST(5328) (Show Source): You can put this solution on YOUR website!
One way of looking at it is pretending the first 2 quizzes were really one exam and the last 2 quizzes were really another exam. That would be 3 exams worth the same fraction of the grade, so each would be worth 1/3 of the grade.
We can make it look a little more complicated, or a lot more complicated, but I will only go for a little.
If each quiz is worth as a fraction of the grade, the final is worth as a fraction of the grade.
Adding all the fractions of the grade we get of the grade (as a fraction).
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The exam is worth 1/3 of the grade.
You could also have calculate what fraction of is as
The exam is worth 1/3 of the grade.
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