My grade is at a 77% and I want an 80%. I have my exam worth 20% what grade do I need to get a 80%
To find out what grade you need on your exam in order to achieve an overall grade of 80%, we can set up the following equation:
Current Grade * (1 - Exam Weight) + Exam Grade * Exam Weight = Desired Grade
Plugging in the values:
0.77 * (1 - 0.20) + Exam Grade * 0.20 = 0.80
0.77 * 0.80 + Exam Grade * 0.20 = 0.80
0.616 + Exam Grade * 0.20 = 0.80
Exam Grade * 0.20 = 0.80 - 0.616
Exam Grade * 0.20 = 0.184
Exam Grade = 0.184 / 0.20
Exam Grade = 0.92
Therefore, you would need to score at least 92% on your exam in order to achieve an overall grade of 80%.