SOLUTION: If someone had an average of 8 after 20 quizzes, how can I find their average after the 21st quiz if their score on that was 0?
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Question 908223: If someone had an average of 8 after 20 quizzes, how can I find their average after the 21st quiz if their score on that was 0? Answer by JulietG(1812) (Show Source):
You can put this solution on YOUR website! Assuming there are ten points in each quiz...
8 * 20 = 160 points out of 200 possible, for 80%
Assuming a zero on the next quiz, there are still 160 points, but now out of 210 possible. 160/210 = 76.19%
